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#1
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PVC or not PVC? That is the question.
This wasn't exactly a shining moment for me in coin photography. In
fact, I was blowing off a couple of shots of film using a very odd combination of equipment. (Nikon F100, Ektar 100, a Pentax(!) 120mm f/4 Macro, and a pair of supposedly daylight balanced fluorescents). As a result, the color balance of these shots is a bit off: http://wemightneedthat.biz/Coins/1853obv.jpg http://wemightneedthat.biz/Coins/1853rev.jpg That said, what about those spots on the back of this half-cent? On the coin, they appear to just be dark spots, but on this particularly shot, they look an awful lot like PVC. The coin is currently housed in an old green label PCGS holder. What says the jury? -- Mike Benveniste -- (Clarification Required) Its name is Public opinion. It is held in reverence. It settles everything. Some think it is the voice of God. -- Mark Twain |
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#2
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PVC or not PVC? That is the question.
Michael Benveniste wrote:
This wasn't exactly a shining moment for me in coin photography. In fact, I was blowing off a couple of shots of film using a very odd combination of equipment. (Nikon F100, Ektar 100, a Pentax(!) 120mm f/4 Macro, and a pair of supposedly daylight balanced fluorescents). As a result, the color balance of these shots is a bit off: http://wemightneedthat.biz/Coins/1853obv.jpg http://wemightneedthat.biz/Coins/1853rev.jpg That said, what about those spots on the back of this half-cent? On the coin, they appear to just be dark spots, but on this particularly shot, they look an awful lot like PVC. The coin is currently housed in an old green label PCGS holder. What says the jury? That type of corrosion can be caused by a number of things, PVC included. I'd rather say that if it were PVC damage, it would be more evenly spread over the surface, and on both sides. Does the coin appear greasy or slimy? That's a dead giveaway for PVC damage, but PCGS certainly would have known that refused to slab it. Possibly someone sneezed or sputtered on the coin before it was slabbed, and it took a while for the damage to appear. Regardless, it's sad for a nice coin like that to suffer. James |
#3
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PVC or not PVC? That is the question.
On Mar 29, 9:39*pm, "Mr. Jaggers" lugburzman[at]yahoo[dot]com wrote:
Michael Benveniste wrote: This wasn't exactly a shining moment for me in coin photography. *In fact, I was blowing off a couple of shots of film using a very odd combination of equipment. *(Nikon F100, Ektar 100, a Pentax(!) 120mm f/4 Macro, and a pair of supposedly daylight balanced fluorescents). As a result, the color balance of these shots is a bit off: http://wemightneedthat.biz/Coins/1853obv.jpg http://wemightneedthat.biz/Coins/1853rev.jpg That said, what about those spots on the back of this half-cent? On the coin, they appear to just be dark spots, but on this particularly shot, they look an awful lot like PVC. *The coin is currently housed in an old green label PCGS holder. What says the jury? That type of corrosion can be caused by a number of things, PVC included. I'd rather say that if it were PVC damage, it would be more evenly spread over the surface, and on both sides. *Does the coin appear greasy or slimy? That's a dead giveaway for PVC damage, but PCGS certainly would have known that refused to slab it. Possibly someone sneezed or sputtered on the coin before it was slabbed, and it took a while for the damage to appear. *Regardless, it's sad for a nice coin like that to suffer. James- Hide quoted text - - Show quoted text - Does PCGS offer any guarantee for copper (or brass) coins? If they do, I would be inclined to get whatever benefit they offer ASAP. In my experience people that want to keep copper surface free from corrosion use dry nitrogen. |
#4
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PVC or not PVC? That is the question.
Peter wrote:
On Mar 29, 9:39 pm, "Mr. Jaggers" lugburzman[at]yahoo[dot]com wrote: Michael Benveniste wrote: This wasn't exactly a shining moment for me in coin photography. In fact, I was blowing off a couple of shots of film using a very odd combination of equipment. (Nikon F100, Ektar 100, a Pentax(!) 120mm f/4 Macro, and a pair of supposedly daylight balanced fluorescents). As a result, the color balance of these shots is a bit off: http://wemightneedthat.biz/Coins/1853obv.jpg http://wemightneedthat.biz/Coins/1853rev.jpg That said, what about those spots on the back of this half-cent? On the coin, they appear to just be dark spots, but on this particularly shot, they look an awful lot like PVC. The coin is currently housed in an old green label PCGS holder. What says the jury? That type of corrosion can be caused by a number of things, PVC included. I'd rather say that if it were PVC damage, it would be more evenly spread over the surface, and on both sides. Does the coin appear greasy or slimy? That's a dead giveaway for PVC damage, but PCGS certainly would have known that refused to slab it. Possibly someone sneezed or sputtered on the coin before it was slabbed, and it took a while for the damage to appear. Regardless, it's sad for a nice coin like that to suffer. James- Hide quoted text - - Show quoted text - Does PCGS offer any guarantee for copper (or brass) coins? If they do, I would be inclined to get whatever benefit they offer ASAP. Here is the text from the PCGS website: "Because the color and surfaces of copper coins can change due to environmental factors, PCGS does not guarantee the color of copper coins, or the absence of copper spotting, for any PCGS graded copper coin graded or sold after January 1, 2010." James |
#5
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PVC or not PVC? That is the question.
"Mr. Jaggers" lugburzman[at]yahoo[dot]com wrote:
That type of corrosion can be caused by a number of things, PVC included. I'd rather say that if it were PVC damage, it would be more evenly spread over the surface, and on both sides. Does the coin appear greasy or slimy? That's a dead giveaway for PVC damage, but PCGS certainly would have known that refused to slab it. Thanks. No slime, but then I couldn't see any slime on the 17-D dime I sent in to ANACS a few years back either. But I'm a little surprised that PCGS would have slabbed it with any corrosion, much less as an MS-64BN. After all, it's a common date. I guess I'll see what PCGS has to say in August, assuming they are at the Boston ANA event. The only time I sent in a coin to PCGS for a grading review it disappeared, so I'm not eager to try again. -- Mike Benveniste -- (Clarification Required) Its name is Public opinion. It is held in reverence. It settles everything. Some think it is the voice of God. -- Mark Twain |
#6
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PVC or not PVC? That is the question.
On Mar 29, 9:31*pm, "Michael Benveniste" wrote:
This wasn't exactly a shining moment for me in coin photography. *In fact, I was blowing off a couple of shots of film using a very odd combination of equipment. *(Nikon F100, Ektar 100, a Pentax(!) 120mm f/4 Macro, and a pair of supposedly daylight balanced fluorescents). As a result, the color balance of these shots is a bit off: http://wemightneedthat.biz/Coins/185...ns/1853rev.jpg That said, what about those spots on the back of this half-cent? On the coin, they appear to just be dark spots, but on this particularly shot, they look an awful lot like PVC. *The coin is currently housed in an old green label PCGS holder. What says the jury? -- Mike Benveniste -- (Clarification Required) Its name is Public opinion. *It is held in reverence. *It settles everything. *Some think it is the voice of God. -- Mark Twain I think Mr. J may be right. I'm sure that sometime during the course of your photographic career you've been warned not to blow dust off of a lens. The reason is that it is difficult to blow without spitting. Spit can be a problem for lens coatings. It can also be a problem for coins. Shortly before the coin was slabbed, someone may have attempted to blow some dust off a the coin and it was hit with spittle. |
#7
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PVC or not PVC? That is the question.
"Phil DeMayo" wrote:
I'm sure that sometime during the course of your photographic career you've been warned not to blow dust off of a lens. The reason is that it is difficult to blow without spitting. Spit can be a problem for lens coatings. Photographic career? I don't have a photographic career, I have a money-draining hobby/addiction :-(. Thanks for your opinion. If I remember correctly, an MS-64 copper can have "noticeable spotting," and as long as it's not PVC, I guess I can live with the assigned grade. -- Mike Benveniste -- (Clarification Required) Its name is Public opinion. It is held in reverence. It settles everything. Some think it is the voice of God. -- Mark Twain |
#8
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PVC or not PVC? That is the question.
On Mar 31, 12:15 pm, "Michael Benveniste" wrote:
Photographic career? I don't have a photographic career, I have a money-draining hobby/addiction :-(. I fully understand. Last year I ebay'ed 6 Nikon bodies and 7 lenses. I knew you were an advanced hobbyist and tried to come up with a better term, but couldn't given the time constraints imposed by the "rush" I was in while replying. I didn't want to insult you so I gave you a new "career". |
#9
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PVC or not PVC? That is the question.
On Mar 31, 1:09*pm, Phil DeMayo wrote:
On Mar 31, 12:15 pm, "Michael Benveniste" wrote: Photographic career? *I don't have a photographic career, I have a money-draining hobby/addiction :-(. I fully understand. Last year I ebay'ed 6 Nikon bodies and 7 lenses. I knew you were an advanced hobbyist and tried to come up with a better term, but couldn't given the time constraints imposed by the "rush" I was in while replying. I didn't want to insult you so I gave you a new "career". You could maybe call Michael a "Semi-professional Photographer". He has had photographs published. If he has been paid, you might consider him a "Professional Photographer". I'm using the term "Semi- Professional" for myself, too, as some of my pics have been published, not only online (by others, not just myself!), but in a couple hard copy books, too. Ok, maybe I'm stretching / reaching / grasping, but I like it and I'm sticking with it!! |
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