Auction 309-320 - Europe & Overseas - Day 6

1850: 6 cs. black, plate 1, type 4, used example, cancelled by the pre-philatelic G./PUENTE/DEUME in red, not quite four margins, fault south east corner, attached to backing paper, attractive having a very fine appearance, extremely rare, almost certainly a unique example. Cert. Comex (1974) and F. Graus (1997).