540 | Switzerland. Airmail

Automatically generated translation

English Yvert 9, 12. 1934. 1 violet and 50 cts black and red. ZURICH to OLTEN, carried on the 1st ZURICH-ATHENS Flight (Balkanflug). Postmark SWISSAIR / BALKANFLUG, in red and on the front flight mark in violet and date stamp ATHENS. MAGNIFICENT AND RARE.

International Auction #136

Wednesday, 7 October 2026 | 16:00

Lot 540

Starting price 45€

Illustrative price in other currencies

$ 52
£ 39
CHF 42

Updated 2026-09-22 12:00:05

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Technical editor of the description:
Hermenegildo Trillo Barragán

Philatelic technician of Spain, Colonies and Worldwide

htrillo@iberphil.com