Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Latvia - 1933, Latvia - Africa Flight, black overprints on Air Post triangles 10s, 15s, 25s and surcharges 50s/15s, 100s/25s, complete set of five, full OG, NH, VF, each stamp with expert's sign on reverse, guaranteed genuine, C.v. $825, Est. $400-$500, Scott #C9-13