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Swiss #31 Validation Question

 
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Posted 02/09/2020   3:01 pm  Show Profile Bookmark this topic Add ccrider to your friends list Get a Link to this Message
Hi folks,
I am having some difficulty identifying this stamp. It was labeled #31 in the old stockbook I am working on. I measure the thickness at 0.09 mm on my digital calipers. Any help would be greatly appreciated.

Thanks in advance,
Chris



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Posted 02/09/2020   3:59 pm  Show Profile Bookmark this reply Add hy-brasil to your friends list  Get a Link to this Reply
It is Scott 31. There's no other 1fr with a yellow thread. Whether it's thin paper, I can't tell from the scan.

Be aware if you are using mechanical calipers/micrometers, you're doing it wrong. Those will compress soft things like paper, distorting the measurement. You either need to use a mechanical paper thickness gauge that only momentarily contacts the paper or one with a digital reader/scanner. This stamp is embossed so unless the white paper outside the design is measured, your measurement might be deceptive. Compare paper with others of the series/issue (or the earlier one) if you can.
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Edited by hy-brasil - 02/09/2020 4:35 pm
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Posted 02/09/2020   5:06 pm  Show Profile Bookmark this reply Add ccrider to your friends list  Get a Link to this Reply
Thank you, Hy-Brasil. I was careful not to compress the engraving so I am sure that my thickness measurement is on the high side. I'll see if I can find a nearby dealer to check thickness for me. It feels very thin but thin is only relative to what the thicker 31 measures. The stamp is in pretty rough shape with a missing corner, two tears, a crease, and having been hinged.

Thanks again,
Chris
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