gatodiablo
Member 
Posts: 456 
What I collect: Places I've been, and places I want to go.
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Post by gatodiablo on Sept 7, 2020 22:00:04 GMT
Having recently received a few auction lots where the stamps were delivered in manila stock sheets, my first thought was "Great, these stock sheets will come in useful." But, the former museum curator in me, and the discoloration of some of them screamed "Caution!"
So, I bought a paper pH testing pen on for $8.32US on Amazon. Sure enough, none of the received stock sheets were acid free, so as soon as stamps are sorted and sheets empty, off to the recycle bin they go.
I suppose many of you already know this already, and so I now return you to your regularly-scheduled programming.
Dan
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JeffS
Member
Posts: 2,844
What I collect: Oranges Philately, US Slogan Cancels, Cape of Good Hope Triangulars, and Texas poster stamps and cinderellas
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Post by JeffS on Sept 7, 2020 22:15:24 GMT
gatodiablo - have you tried testing any used stamps with the pen? Or perhaps any covers from the 1940s - 1950s?
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ameis33
Member
What's in a name? That which we call a rose, by any other name would smell as sweet
Posts: 546
What I collect: Poland and Italy Republic
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Post by ameis33 on Sept 7, 2020 22:35:53 GMT
Can you show me this pen? Last time i saw something to measure the pH of old paper it was a regular pH-meter like the ones you can find in any chemical laboratory, and the "pen" was a pH-probe, which is similar to a pen, but quite delicate to use and also to maintain... Should i find something easier i could be interested... Not for stamps, but for my letters...
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gatodiablo
Member
Posts: 456
What I collect: Places I've been, and places I want to go.
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Post by gatodiablo on Sept 8, 2020 0:15:18 GMT
ameis33 Here is the Amazon link to the pen: www.amazon.com/gp/product/B000KNJCSS/JeffS I have not used it on stamps or covers. The problem with the pen is that on acid-free material, it leaves a purple streak. (On acidic papers, it leaves a yellow trail). Hence, I wouldn't use it on original, collectible materials. There is probably not much you can do if your stamps, covers, or other ephemera are not acid-free. But you can at least verify if your manila pages, album pages, and other storage boxes are acid-free.
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JeffS
Member
Posts: 2,844
What I collect: Oranges Philately, US Slogan Cancels, Cape of Good Hope Triangulars, and Texas poster stamps and cinderellas
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Post by JeffS on Sept 8, 2020 0:47:00 GMT
My point is there is no shortage of junk stamps and covers to experiment on.
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mikeclevenger
Member
Inactive
Posts: 887
What I collect: Ohio Tax Stamps, Ohio & Georgia Revenues, US Revenues, US FDC's, & Germany Classics
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Post by mikeclevenger on Sept 8, 2020 9:15:32 GMT
ameis33 Here is the Amazon link to the pen: www.amazon.com/gp/product/B000KNJCSS/JeffS I have not used it on stamps or covers. The problem with the pen is that on acid-free material, it leaves a purple streak. (On acidic papers, it leaves a yellow trail). Hence, I wouldn't use it on original, collectible materials. There is probably not much you can do if your stamps, covers, or other ephemera are not acid-free. But you can at least verify if your manila pages, album pages, and other storage boxes are acid-free. Well, Amazon sales on acid free pens just went up. I just ordered one, I never thought about testing those manila pages. Thanks for the advise. |
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graphicbadger92
Member
Inactive
Wondering if you have sent me a name of a preference country that would start a conversation about.
Posts: 62
What I collect: I am a collector of rare or uncommon stamps treasures are my specialty or unique, obtain desired stamps for anyone looking.
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Post by graphicbadger92 on Dec 9, 2020 16:17:23 GMT
ameis33 Here is the Amazon link to the pen: www.amazon.com/gp/product/B000KNJCSS/JeffS I have not used it on stamps or covers. The problem with the pen is that on acid-free material, it leaves a purple streak. (On acidic papers, it leaves a yellow trail). Hence, I wouldn't use it on original, collectible materials. There is probably not much you can do if your stamps, covers, or other ephemera are not acid-free. But you can at least verify if your manila pages, album pages, and other storage boxes are acid-free. Well, Amazon sales on acid free pens just went up. I just ordered one, I never thought about testing those manila pages. Thanks for the advise. Just ordered one 5 days ago and it works great get a two pack as the tip tends to fill with the purple colored tints of the acid.got mine off eBay came in 3 days good find ameis33 good find now if i can invent a watermarking pen filled with lighter fluid lol working on it as we speak. Verbal patten 😂 |
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