India used in Aden: “124” cancel on 1866 6a purple fiscal overprinted “POSTAGE” type 15 in green. In the Charles Hornal sale of Specialized Aden in 1957, it was believed that it was the only known stamp with this cancel, and it was the highlight of the auction and was estimated the highest amongst all lots in the sale. This is probably the second known example. A rare find.
Catalogue No: SG Z34
Catalogue Value: £550