Auction: 166 - The Philatelic Collectors' Series Sale
Lot: 205
Unitrade #2TCv, 1851 6c Grey, trial color proof on India, overprinted "SPECIMEN" vertically in orange, left sheet-margin block of six (3x2) from the right pane pos. 38-40, 48-50, other three margins ample to large, very fine;
Sold for
$425