Lot 50507 – German States, Brunswick – 1852 2sg, cliché on celluloid

German States, Brunswick – 1852 2sg, cliché on celluloid in black with inverted design; an exceedingly rare Sperati cliché, with no matrices or clichés mentioned in the B.P.A’s Sperati I handbook, and the Postal Museum in Paris possesses only six clichés or matrices for all German states.