Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Thursday, May 4, 2023 at 3:00 PM UTC
Lot 88:
1929 (September 26), 1st Switzerland Flight cover, franked by five Eagle stamps of 5pf-50pf, on-board ”26.9.1929” cancellation, Bern the same day arrival ds, VF and scarce, Sieger #35h, €350 w/o a premium for franking, Frost #127-31 I, C.v. $450, Scott #C27-31
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