Lot 50073 – 1928-31 Group on two stockcards of the Zeppelin air post stamps

1928-31 Group on two stockcards of the Zeppelin air post stamps (20), including three mint sets (two n.h.) of the 1rm, 2rm and 4rm, as well as fine used examples of the 1rd (1), 2rm (4), and the 4rm (5), and an additional 4rm with sheet marginal to left with « 36 » in margin, post fresh mint examples and a fine collection.