Heinrich Köhler 384 Auction – Day 1 Single Lots: Europe and Colonies, Kingdom of Lombardy–Venetia – The "P.G." Collection

1881, 20pa “R O” overprint, three used singles, one each cancelled with blue grid, blue c.d.s., and red c.d.s., the odd perf flaw as often seen, else a fine trio illustrated the cancellation types in use during this provisional period.