375rd Heinrich Köhler auction - Day 1

1850/78, the highly important mounted collection with 154 items mounted on 15 pages (not counting any of the 14 pages of card proofs and several auction lot cards), includes 1 negative and 2 clichés (ex Robson Lowe), there are over 35 archival items with such varied examples as working proofs signed by Egisto Sperati, reverse prints, color trails, exposure trials and even washed genuine stamps with cancels retained from a Sperati glassine that note they are 1854 issue paper, these archival items were purchased from Sperati's daughter, Yvonne Pochard de Sperati, and most can not be duplicated, all ex Carl Walske