Lot 2405
 
Switzerland, 1936, 40c on 90c Disarmament airmail, vermilion surcharge (C25a), with normal carmine surcharge (C24) and 30c on 90c (C23), tied by Automobile-Post c.d.s.s, 1 Aug 1937, on cover carried on special Zurich-Sion flight at the 4th International Air Meet, Very Fine and exceedingly rare on cover. Only 20,000 were issued, with 1992 Walter Abt cert. Michel 293a. Zumstein F 24a 1,300 SFr on cover ($1,430).
Estimate 400 - 500
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| Realized $260 |
