In a discussion I had with essayk about identifing double paper U.S. banknote stamps, he said
Quote:
Coincidentally, the current issue of the USPCS Chronicle has an article by John Barwis on stamp thickness characteristics of the Bank Note issues. He sets down some important data and measurement standards for the general run of the issued stamps, and once we can figure out a transferrable calibration standard for the measurement of their thickness, this will allow several of us with this kind of specialty material to gather some enlightening data.
If you have not already done so, I hope you will consider investing in a spring loaded paper micrometer/dial thickness gauge calibrated to .0001 inch to measure your stamps
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That discussion caan be found here.
https://goscf.com/t/39059&SearchTerms=double+paperI have not invested in the above, more stamps came home instead!
Posted 04/12/2015 11:22 am
