^ncellaiionCluk - The U S Cancellation Club

mailer's postmark permit may be Permit No. 239. Anyone having a mailer's postmark permit has a permit to mail with precanceled (by the postal service) adhesive stamps; but the converse is not true. The omission of some illustrations referred to in the text makes it hard to evaluate some statements. E.g., "Not all of the cancels have been mailer ... ................
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