Auction #93 Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World

1935, Queen Astrid Memorial issue, 10c+5c - 2.45fr+45c, complete set of eight Ministerial large die proofs in black, each with appropriate embossed seal at bottom (only a handful complete sets produced), complete set of singles and blocks of four (NH), as well as eight addressed FDC with all stamps presented, fresh VF and scarce assemblage, Est. $1,000-$1,500