Lot no. 523

40 c. orange, 2 copies, one slightly touched at one side, otherwise clear to good margins, tied by cds. "LUXEMBOURG 5 SEPT. 60" to double rate lettersheet with large part of contents (side flaps missing) to London; one stamp with some light creasing, otherwise fine; a fine and scarce cover to abroad, sign. Goebel and Calves, certificate Böttger BPP (2017)