375rd Heinrich Köhler auction - Day 1

1855/89, two pages with 15 items, one of the most interesting groups of the entire collection, the 7 finished reproductions include a nice example of the 3skb error of color (Sperati priced these higher than any of his other stamp reproductions), other material includes 7 decolored genuine stamps from a Sperati stockbook that were awaiting use to make reproductions, and a proof of the 1889 Official issue surcharge (two known, each a different color), all ex Walske