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#1
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Dipping
I've heard that some dealers (mainly from the major coin advertisers) dip
coins. Supposely dipping is different from cleaning coins. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? dennis |
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#2
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Dipping
"Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James |
#3
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Dipping
On Jul 21, 4:14 am, "Mr. Jaggers" lugburzman[at]yahoo[dot]com wrote:
"Dennis G. Rears" wrote in ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James I know 2 sorts of dips. One is simply to use a mild detergent (Kodak's Photoflo solution comes to mind, but there are others). That has some prospect for removing grease and dirt if used with hot water and no rubbing, it need not affect a coin that is primarily a noble metal. Not all coins are primarily noble metals. The base metals are reactive and reactions are expedited by water as it hold soluble ions close to the metal. Many nominally silver or gold coins contain appreciable amounts (even a majority in some cases) of base metal. One should not be too worried about a circulated silver coin as some corrosion reactions will proceed with time in any case (sometimes affectionately referred to by coin enthusiasts as "toning"). With silver coins there are other sorts of dips. Typically these are designed to dissolve silver oxides (photographic hypo is a type of this). The more relevant oxide of silver is the sulphide (sulpher chemistry resembles oxygen chemistry in some superficial ways). Sulphides are less easily removed than the clorides and bromides used in photo emulsions and the agents used are a bit more aggressive. To remove the suphides, means dissolving entire silver sulphide molecules. If they are sparse on a surface, you might think that even a microscope will not see that, although there are 2 problems with this conjecture. The first is that if they were sparse you would not really notice the tone. The other is the agents which dissolve the sulphides also dissolve some silver. How long they spend in the dip and how well they are subsequently washed are also factors. So, if you have a coin that is seriously dark, and you dip it, you remove all of the sulphides and the silver they bond with. You will likely remove some additional silver. The sulphide and what else is removed happen more or less at random, so the net effect is to roughen the surface slightly. If you started with a proof coin, well it really isn't one any more. Such a dip cannot improve a coin. If it is a well-worn coin it may look a little more pleasing, but in the end there will be less silver in the coin. What the dips will do to any base metal really can only be settled by experiment. The base metal would likely react even more than with silver and the washing (necessary to remove the stuff and stop and reaction). On worn silver coins, its hard to fault using a little detergent if applied with care. In any other situation it seems like dipping can only hurt. Even so, there are other solvents that I haven't tried or mentioned; it may be that there is a better way. |
#4
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Dipping
"Non scrivetemi" schreef in bericht tonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? |
#5
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Dipping
Basement wrote:
"Non scrivetemi" schreef in bericht tonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? I'd be willing to dip my balls in his mouth if you'll take the picture... -- -Bob "My fault,my failure,is not my passions,but in my lack of control of them" -J. Kerouac "All are lunatics, but he who can analyze his delusion is called a philosopher." - Ambrose Bierce |
#6
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Dipping
"Bob" schreef in bericht ... Basement wrote: "Non scrivetemi" schreef in bericht tonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? I'd be willing to dip my balls in his mouth if you'll take the picture... -- I think we have a deal here... |
#7
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Dipping
Basement wrote:
"Bob" schreef in bericht ... Basement wrote: "Non scrivetemi" schreef in bericht instonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? I'd be willing to dip my balls in his mouth if you'll take the picture... -- I think we have a deal here... I'm buffing my sack as we speak! -- -Bob "My fault,my failure,is not my passions,but in my lack of control of them" -J. Kerouac "All are lunatics, but he who can analyze his delusion is called a philosopher." - Ambrose Bierce |
#8
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Dipping
"Bob" schreef in bericht ... Basement wrote: "Bob" schreef in bericht ... Basement wrote: "Non scrivetemi" schreef in bericht news:f86be400ebe3495d9f1b295c7110e089@pboxmix. winstonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? I'd be willing to dip my balls in his mouth if you'll take the picture... -- I think we have a deal here... I'm buffing my sack as we speak! -- -Bob "My fault,my failure,is not my passions,but in my lack of control of them" -J. Kerouac "All are lunatics, but he who can analyze his delusion is called a philosopher." - Ambrose Bierce Bobby the Sack Buffier. Sounds like a top selling movie |
#9
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Dipping
Basement wrote:
"Bob" schreef in bericht ... Basement wrote: "Bob" schreef in bericht ... Basement wrote: "Non scrivetemi" schreef in bericht news:f86be400ebe3495d9f1b295c7110e089@pboxmix .winstonsmith.info... Mr. Jaggers wrote: "Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. Comments? Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James Admit it James Jaggers. Yer want me, and yer want me to have all yer future children. S.B. You want to dip someone? I'd be willing to dip my balls in his mouth if you'll take the picture... -- I think we have a deal here... I'm buffing my sack as we speak! -- -Bob "My fault,my failure,is not my passions,but in my lack of control of them" -J. Kerouac "All are lunatics, but he who can analyze his delusion is called a philosopher." - Ambrose Bierce Bobby the Sack Buffier. Sounds like a top selling movie Any movie I'm starring in will rake in the dough! -- -Bob "My fault,my failure,is not my passions,but in my lack of control of them" -J. Kerouac "All are lunatics, but he who can analyze his delusion is called a philosopher." - Ambrose Bierce |
#10
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Dipping
"Mr. Jaggers" wrote:
"Dennis G. Rears" wrote in message ... I've heard that some dealers (mainly from the major coin advertisers) dip coins. Supposely dipping is different from cleaning coins. Dipping is a non-abrasive, chemical form of cleaning. It is doubtful that many dealers actually engage in this practice, but often buy cleaned/dipped coins at a dime on the dollar and then resell them for 80% of book, as they know such coins will never get into a respected holder. That is not always true. Even a cleaned coin gets by some times. A year ago I bought a 1934-2006 Lincoln cent set in a Dansco album labeled 1909-2007. I was missing 70 coins from 1909-1933. I've been buying them from various dealers but wondering what the effect of dipping is. I've read that dipping can make an ef/AU coin look UNC+. No. Dipping, if done carefully by an experienced person, can result in an improvement in the eyes of some, but not all. Even the top-tier slabbers will holder a dipped coin if they don't perceive any damage. Repeated dipping, though, eventually causes the coin to cross the line to being non-slabbable. And only coins with a fairly high silver content will dip out properly. Dipped nickel coins, and especially dipped bronze/coppers almost always turn ugly colors after a short time, if not immediately. James |
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