Lot 20850 – 1857 10k brown and blue, extremely fine copy with fine even margins, struck 104

1857 10k brown and blue, fine even margins, obliterated by superbly struck 104 dots of Belostok (Grodno Government Bialystok, today Poland); a very attractive and scarce stamp of fresh colour, of which only a single cover is recorded by Craveri, signed Buhler.