German States, Baden – 1862-66 18kr and 30kr Issues: group of 20 items including two important retouched painted matrices on film, one for each of the two values, the 30kr being rejected by Sperati with his notation « not terrible », the other his accepted negative being denoted by his pencil « a x », this master cliché being the foundation for the creation of the glass support clichés of which there are nine examples, seven for the 18kr in vermilion, brown, green (unusual in the Sperati archive), black and red, two dated March 1924 and March 1937, the latter with the notation 21°C temperature times 5% of a non indicated substance times 1 min exposure to light, two glass support clichés for the 30kr in black (one cracked), also five clichés on celluloid for the 18kr, two being negative with handpainted surround, two others with one black dated 3/37 and the note « Agfa » (celluloid) with 22°C temperature, 5% chemical and 3 minutes 30 seconds exposure to light, and one in brown; one celluloid cliché for the 30kr in black, one trial exposure on photographic paper of the 18kr marked as « (b) » and two strips of three working trial essays of the 30kr in black on white paper with notations and one crossed-out in pencil; a unique and unparalleled assembly of material, in particular the inclusion of a master cliché makes this group of significant importance; the B.P.A. only reports six clichés for the 18kr in its collection; there were no clichés found in the « Ultimate » collection and the Postal Museum in Paris possesses just six clichés or matrices for all German States.