Quote:
Originally Posted by steve B
The primary components for the 5c 1847 are - Calcium carbonate, Lead sulfide, and lead sesquioxide (red lead)
http://chronicle.uspcs.org/pdf/Chronicle_252/21674.pdf
That may not come through, as the articles after a certain date are members only.
Printing inks would of course vary a lot from pen inks, as the properties need to be a lot different. |
Do you think they had any concerns about lead poisoning when they licked that Ben Franklin stamp?
I was also at the 2006 World Stamp Expo in D.C. Drove down to the APS in Richmond last year. I used to collect quite a bit more. Now I usually buy Olympic related postal covers (1960 Italian set, 1968 US Trials set) to get signed by athletes.