"Secret Mark" Milton UNL Fr. 1267-71 15¢ Fourth Issue Back Proof PMG About Uncirculated 55. ...
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"Secret Mark" Milton UNL Fr. 1267-71 15¢ Fourth Issue Back Proof PMG About Uncirculated 55. "Secret marks" was a method employed by the ABNCo to distinguish different printings and also to be used in counterfeit detection. The printer's marking mentioned on the back label is a penned red line that extends from the bottom edge of this India paper Proof and ends where a "secret mark" for this design was intended. An article discussing the "secret marks" topic is, www.spmc.org - "Secret Marks on 4th Issue Fractional Notes," in Paper Money, Society of Paper Money Collectors, September/October 2015, Vol. LIV, No. 5, Whole No. 299, pages 357-61. This Proof was previously mounted. HID08101242017 www.HA.com/TexasAuctioneerLicenseNotice
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