Lot 50123 – United States, Confederate States – 1863 10c, assembly comprising 20 items

United States – Confederate States – 1863 10c, assembly comprising 20 items including one retouched master negative on film and mounted on glass, with affixed note « pas terib. » (‘pas terrible’, not terrible), seven glass support clichés (of which five reversed) in indigo, orange-vermilion, black, gray, ochre and red-brown, dated July-August-37, March-Aug.-41 and March-55 (after Sperati’s sale to the B.P.A.), including interesting annotations with « vert » as the green colour of the filter used to obtain the orange-red after an exposure to light of « 3’30 »  » (3 minutes 30 seconds) and 5% of the chemical substance used, « soleil sombre » (sun-shadow); two clichés on celluloid, one dated « 2/51 », the other with « clé. usé » denoting that it was a previously used and recycled, as well as one finished signed reproduction; cancellations: six glass support clichés and three essays on paper with dates « 12/44 » & « 4/53 » and examples of Mariet, Nashville, and « New York/Paid », this being erroneously used by Sperati as it was applied on transatlantic mail. A unique and spectacular group; of great significance as no examples of clichés or matrices recorded in the Postal Museum in Paris and the « Ultimate » collection.