Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2

China

The auction will start in __ days and __ hours

Start price: $150

Buyer's premium:

1942, Dr. Sun Yat-sen, $50 blue, block of four imperforated horizontally and rouletted (6½) vertically, no gum as issued, VF, Chan #617b, SG #661a, £480 as singles, Est. $250-$300, Sc. # 511 var