Schermack Type III Perfins
Schermack Type III Perfins
One section of a chart of Schermack Type III perforations with private control marks, intended for use in Schermack mailing and vending machines. Sheets of stamps were cut into strips, pasted together in rolls, and perforated with the Schermack Type III “hyphen-hole” perforation. The control marks punched into the stamps denoted the company by which they were used. The use of perfins, as they are…
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