Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged 1941
Now showing: Costa Rica - Postage stamps - 1941 - Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged - 7 stamps.
1941
Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged
2. June WM: None Perforation: 12
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER1-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER2]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER2-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER3]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER3-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER4]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER4-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER5]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER5-s.jpg)
![[Airmail - Costa Rica-Panama Boundary Treaty. Overprinted "Mayo 1941 - Tratado Limitrofe Costa Rica - Panama" and Surcharged, type ER6]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Costa-Rica/Postage-stamps/ER6-s.jpg)
| No. | Type | D | Color | Description |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 275 | ER | 5/20C | blue | - | 0.27 | 0.27 | - | USD |
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| 276 | ER1 | 15/20C | blue | - | 0.27 | 0.27 | - | USD |
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| 277 | ER2 | 40/75C | violet | - | 0.27 | 0.27 | - | USD |
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| 278 | ER3 | 65/1C/Col | carmine | - | 0.54 | 0.54 | - | USD |
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| 279 | ER4 | 1.40/2Col | light blue | - | 3.24 | 3.24 | - | USD |
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| 280 | ER5 | 5Col | greyish black | - | 12.94 | 12.94 | - | USD |
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| 281 | ER6 | 10Col | reddish brown | - | 12.94 | 12.94 | - | USD |
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| 275‑281 | - | 30.47 | 30.47 | - | USD |
