Auction 333-341 Europe & Overseas - Day 6

1850: 6 cs. black, plate 1, unused block of twenty one, no gum, with sheet margin left showing frameline, four good to large margins all round, vertical crease centrally, diagonal crease in margin into first stamp, tear to lower portion of margin not affecting block, thin to one stamp, overall a spectacular exhibition item, very fine to superb appearance, extraordinarily rare, one of the largest known unused blocks from this plate and in such fine condition. Cert. Comex (1989).