Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects 1957
Now showing: Switzerland - Postage stamps - 1957 - Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects - 5 stamps.
1957
Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects
30. November WM: None Sheetsize: 50 Engraving: Courvoisier. S.A. Perforation: 11¾
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YQ]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/YQ-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YR]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/YR-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YS]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/YS-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YT]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/YT-s.jpg)
![[Pro Juventute - The 250th Anniversary of Leonhard Euler - Insects, type YU]](https://www.stampworld.com/media/catalogue/Switzerland/Postage-stamps/YU-s.jpg)
| No. | Type | D | Color | Description |
|
|
|
|
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 642 | YQ | 5+5 (C) | multicoloured | Leonhard Euler | (10550000) | 0.53 | - | 0.26 | - | USD |
|
|
|||||
| 643 | YR | 10+10 (C) | multicoloured | Colias croceus | (8 mill) | 0.26 | - | 0.53 | - | USD |
|
|
|||||
| 644 | YS | 20+10 (C) | multicoloured | Abraxas grossulariata | (5780000) | 0.53 | - | 0.53 | - | USD |
|
|
|||||
| 645 | YT | 30+10 (C) | multicoloured | Cetonia aurata | (1640000) | 2.65 | - | 5.30 | - | USD |
|
|
|||||
| 646 | YU | 40+10 (C) | multicoloured | Catocala nupta | (2 mill) | 2.12 | - | 4.24 | - | USD |
|
|
|||||
| 642‑646 | 6.09 | - | 10.86 | - | USD |
