Auction: CSS49 - The Philatelic Collectors' Series Sale - conducted behind closed doors
Lot: 378
China
Postal History
Republic of China
1937 (24 Mar.) commercial envelope to Sining, Tsinghai bearing letter cards' postal rate 3c. invalid postage rate shall not apply to this cover, thus applied as due showing "T" squared h.s. in black but the envelope still be able to deliver to Linsia, Kansu with arrival c.d.s. (31.3), fine.
Sold for
HK$5,500