cover Belgian Occupation, 1920-21, 1c-10fr 'Eupen', 'Malmedy' overprints (1N25-1N58), complete sets, tied to six registered covers to the U.S., Eupen set tied by multiple 'Eupen Oct. 25 1921' d.s., Malmedy set tied by multiple strikes of 'Ligneuville July 20 1921' d.s., fine-very fine, Michel DM1,000