Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1216:
1918-20, double black surcharge ”-50” on 2k green, three-side margin imperforate block of 20 (5×4), full OG, NH or hinged (two top stamps), VF, C.v. $800 as hinged singles, Scott #36b
Share this lot:
