EXTREMELY FINE APPEARANCE. AN EARLY USE OF THE PHILADELPHIA "OLD STAMPS NOT RECOGNIZED" MARKING ON A STAR DIE ENTIRE, WHICH WAS DEMONETIZED BEFORE THE 1857 ISSUE STAMPS.
Philadelphia was one of the first post offices to receive the new 1861 Issue stamps and stationery. The new 1861 Issue embossed envelopes were announced as available on August 8, with a five-day exchange period expiring on August 13. The new 1861 Issue adhesive stamps were announced as available on August 19, with a six-day exchange period expiring on August 25. (Source: Elliott Perry, Pat Paragraphs reprint, pp. 97, 140-141). After the expiration dates, any old-style embossed envelope or adhesive stamp would be marked "Old Stamps Not Recognized" and postage due. Nesbitt and Star Die entires are known bearing the "Old Stamps Not Recognized" handstamp dated on August 17 and 19, 1861. The earliest recorded use of this marking on an adhesive is August 26, 1861, the first day the stamps were invalid for postage in Philadelphia.
Ex Wunsch. With 1990 P.F. certificate