375rd Heinrich Köhler auction - Day 1

1883, single page with a die proof in color, 9 BPA card proofs and two exceptional and rare models used to make forged cancels, the genuine models have their genuine cancels retouched with paint, Sperati then photographed removing the background to make his cliché for the forged cancels, it is obvious by comparison with the BPA card proofs that show cancels over the perforations that these are the original models, they were found in Sperati's stockbook, all items except the card proofs are ex Carl Walske