cover 1873 (16 Aug.) neat envelope to Hamburg bearing 1869-73 perf. ½sch. bluish green and deep carmine (VII printing) and 1sch. carmine and light green (thick paper) (insignificant perf. defect at foot) cancelled by two strikes of the double arc d.s. and showing arrival c.d.s. on reverse. A very scarce and charming exhibition item. Lemberger certificate (1985). M. 6g, 7c. Photo