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20 Francs Transalpine flight
| Issuer | Swissmint |
|---|---|
| Year | 2013 |
| Type | Log in to see details |
| Value | 20 Francs 20 CHF = EUR 22 |
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| Composition | Log in to see details |
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|---|---|
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| Edge | Lettered: ★★ DOMINUS | PROVIDEBIT | ★★★★★★★★★★★ |
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| Mintage | 2013 B - 35,000 2013 B - Proof - 4,000 |
| Additional information |
This issue commemorates the first transalpine airmail flight, completed by Oskar Bider on July 13, 1913, crossing the Alps from Bern to Milan in a Blériot XI monoplane. Bider completed the crossing in just over three hours despite significant turbulence and near-zero navigational aids — he used railway lines as ground references. The centenary made 2013 a natural occasion for Swiss authorities to recognize a flight that predated regular airmail service in Switzerland by nearly a decade.