1874-1903 Postal Stationery Issues, Die Wax Essays (U108-E/UO61-E). 15 die impressions in red wax, UPSS die nos. between 46 and 109, plus two Officials and two labeled "Essay", mounted in three rows in a leather case housed inside a frame, with brass "Wax Impressions of Envelope Dies 1874-1903 - Plimpton Manufacturing Co." label on bottom of frame, each impression identified as to year, deeply impressed and showing every minute detail of the engraving, most with thin cracks

VERY FINE. A RARE AND STRIKING DISPLAY OF WAX ESSAY IMPRESSIONS FOR POSTAL STATIONERY ISSUES BETWEEN 1874 AND 1903.

These wax impressions show the true quality of postal stationery engraving. Illustrated in Undersander on p. iv. Accompanied by a list identifying each die by UPSS no. Total Undersander value $8,000.00

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