Suisse
Montre maintenant: Suisse - Timbres-Poste (1849 - 2024) - 1 Timbres-poste.
1957
Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects
30. novembre WM: Aucun Taille de la feuille: 50 Gravure: Courvoisier. S.A. Perforation: 11¾
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YQ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/YQ-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YR]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/YR-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YS]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/YS-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YT]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/YT-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YU]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/YU-s.jpg)
| No. | Genre | D | Couleur | Description |
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| 642 | YQ | 5+5 (C) | multicouleurs | O | (10550000) | 0,54 | - | 0,27 | - | USD |
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| 643 | YR | 10+10 (C) | multicouleurs | Colias croceus | (8 mill) | 0,27 | - | 0,54 | - | USD |
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| 644 | YS | 20+10 (C) | multicouleurs | Abraxas grossulariata | (5780000) | 0,54 | - | 0,54 | - | USD |
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| 645 | YT | 30+10 (C) | multicouleurs | Cetonia aurata | (1640000) | 2,72 | - | 5,44 | - | USD |
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| 646 | YU | 40+10 (C) | multicouleurs | Catocala nupta | (2 mill) | 2,18 | - | 4,35 | - | USD |
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