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#11
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1/17/2004 7:06 PM
On Fri, 16 Jan 2004 06:55:12 GMT, Bob Ingraham wrote: 1/15/2004 8:52 PM snip I mentioned stamps with acidic gum. Perhaps the best-known example is found in Germany C57-C58, the Hindenburg zeppelin issue of 1936. Believe it or not, the gum of these two stamps contains sulphuric acid. It is common to find mint copies of these stamps, mint or on cover, which are badly toned by the acid. On the other hand, if you find an uncancelled copy of either stamp, it's a good bet that it was a mint stamp that was soaked to remove the gum. snip ++++++++++++++++++++ Bob, Sir: The "toned" discoloration seems pretty obvious in your scans, but when I look at the half-dozen C58s among my German air mail dupes, none of them show any discoloration at all. They were part of a bulk lot from a WWII vet which he sold to me about 1960, and they have always seemed OK, so the acid note in Scott catalog never bothered me. I suppose that varying storage conditions could cause varying rates of deterioration of these stamps. Perhaps some batches of gum had more or less acid in them? I really don't know. Now you have made me feel better about the gumless mint copies in my album, though. B68 souvenir sheet is no problem, because I don't have one and my album has no place to put that sheet if I did get one. Obviously, not a complete album nor a complete collection! (I don't recall ever seeing that s/s, nor would I have enough money for one. Although, you know, it's surprising how often you can items like that for a smallish fraction of catalogue value. I went to a small auction this afternoon, and not a single lot went for anywhere near catalogue value. . How many years have you owned that Zepp Cover? Was it less discolored at the time you first got it? I don't recall when I got the cover, but I don't think that it was more than a couple of years ago. I scanned it August of last year. I'll try to remember to dig it out and check, but I rather doubt much change has occurred yet. It will be interesting to check in a few years to see whether more discoloration has occurred. I'm curious about something: I don't know where I first learned about the sulphuric-acid content of the gum if C57 and C58, but it's not mentioned in Scott! Not, at least, in my elderly (1986) edition. Is it mentioned in newer editions? I did find mention of it on Linn's "Refresher Course" web page at http://www.linns.com/howto/refresher/gum_20030217/refreshercourse.asp. Bob |
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#12
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On Sun, 18 Jan 2004 06:39:37 GMT, Bob Ingraham
wrote: snip I'm curious about something: I don't know where I first learned about the sulphuric-acid content of the gum if C57 and C58, but it's not mentioned in Scott! Not, at least, in my elderly (1986) edition. Is it mentioned in newer editions? I did find mention of it on Linn's "Refresher Course" web page at http://www.linns.com/howto/refresher/gum_20030217/refreshercourse.asp. Page 28A of my 2002 Scott Volume 3 states that Germany B68 has highly acidic gum. The stamp is valued with gum removed. Page 126 of same edition states that "The note concerning gum after No. B28 also applies to Nos. C57-C58." Page 121 speaks about the Ostropa sheet (B68), gum and that collectors prefer to remove it because of the acidity. Tracy Barber |
#13
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1/18/2004 12:18 AM
On Sun, 18 Jan 2004 06:39:37 GMT, Bob Ingraham wrote: snip I'm curious about something: I don't know where I first learned about the sulphuric-acid content of the gum if C57 and C58, but it's not mentioned in Scott! Not, at least, in my elderly (1986) edition. Is it mentioned in newer editions? I did find mention of it on Linn's "Refresher Course" web page at http://www.linns.com/howto/refresher/gum_20030217/refreshercourse.asp. Page 28A of my 2002 Scott Volume 3 states that Germany B68 has highly acidic gum. The stamp is valued with gum removed. Page 126 of same edition states that "The note concerning gum after No. B28 also applies to Nos. C57-C58." Page 121 speaks about the Ostropa sheet (B68), gum and that collectors prefer to remove it because of the acidity. Tracy Barber Thanks, Tracy. Obviously, I need to buy a more recent catalogue! But I really like the small format of the old catalogues. I have some arthritis in my hands, and the new, large-format catalogues are difficult for me to handle sometimes. Bob |
#14
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Yes, its called a CSA #11. :-)
-a "Eric Bustad" wrote in message ... So should there also be a NP catagory, where the paper is basically destroyed but the gum remains? = Eric |
#15
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In message
"Albumen" wrote: [snip] On to your question -- The NG listing has been a long time in coming and is much appreciated by collectors of classical issues. In many cases the antique gum can only be preserved only at the expense of the paper, and so over time some tough choices have to be made. By including a NG category for the classics it creates a market where none existed before, and puts the hobby on better long term footing vis'a'vis' the balance between plague and preservation. My Sassone catalogue for Italy lists mint no gum values for the earlier issues. I have a number where the presence of gum would have eroded my bank balance enormously. I gave a display to a local society yesterday and none of the displays showed the back of the stamps..... I would far rather have a nice fresh mint no gum stanp than a tatty copy with gum on the back. -- Tony Clayton or Coins of the UK : http://www.tclayton.demon.co.uk/coins.html Values of Coins of the UK : http://www.tclayton.demon.co.uk/values/coins.html Metals used in Coins : http://www.tclayton.demon.co.uk/metal.html Sent using RISC OS on an Acorn Strong Arm RiscPC .... (A)bort (F)ail (C)reate a holographic image in plasma memory? |
#16
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On Wed, 21 Jan 2004 14:41:26 +0000, tony
wrote: In message "Albumen" wrote: [snip] On to your question -- The NG listing has been a long time in coming and is much appreciated by collectors of classical issues. In many cases the antique gum can only be preserved only at the expense of the paper, and so over time some tough choices have to be made. By including a NG category for the classics it creates a market where none existed before, and puts the hobby on better long term footing vis'a'vis' the balance between plague and preservation. My Sassone catalogue for Italy lists mint no gum values for the earlier issues. I have a number where the presence of gum would have eroded my bank balance enormously. I gave a display to a local society yesterday and none of the displays showed the back of the stamps..... I would far rather have a nice fresh mint no gum stanp than a tatty copy with gum on the back. Give this man a cee-gar. DITTO. Tracy Barber |
#17
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Tony
[snip] On to your question -- The NG listing has been a long time in coming and is much appreciated by collectors of classical issues. In many cases the antique gum can only be preserved only at the expense of the paper, and so over time some tough choices have to be made. By including a NG category for the classics it creates a market where none existed before, and puts the hobby on better long term footing vis'a'vis' the balance between plague and preservation. My Sassone catalogue for Italy lists mint no gum values for the earlier issues. I have a number where the presence of gum would have eroded my bank balance enormously. I gave a display to a local society yesterday and none of the displays showed the back of the stamps..... Yvert, Ceres, Dallay and Marianne catalogues do the same for French classic issues. I would far rather have a nice fresh mint no gum stanp than a tatty copy with gum on the back. Indeed - and how can non-millionaires otherwise ever hope to possess rare stamps? I am also highly suspicious of the amount of "unmounted mint" early material that keeps on appearing on the market. Michael Meadowcroft Michael Meadowcroft Waterloo Lodge 72 Waterloo Lane Leeds LS13 2JF GB Tel: +44 (0)113 257 6232 |
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