细节
cover 35pa. green (perf. 9½x12) and 50pa. deep green horizontal pair (perf. 9½), affixed to 1872 (Sept.) envelope to France (29.9 arrival) and cancelled by two "BEOGRAD" c.d.s., red crayon "27" (Kr.) rate marking adjacent, reverse with Vienna (26.9) transit c.d.s.; light soiling in places. A rare example of a letter to France prepaid at the pre-U.P.U. rate. M.16IC, 18IB. Photo