Now showing: Guyana - Official stamps (1981 - 1988) - 1 stamps.
1. July WM: 1 Perforation: 14
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![[Postage Stamps Overprinted "OPS", type F]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/F-s.jpg)
![[Postage Stamps Overprinted "OPS", type F1]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/F1-s.jpg)
![[Postage Stamps Overprinted "OPS", type F2]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/F2-s.jpg)
![[Postage Stamps Overprinted "OPS", type F3]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/F3-s.jpg)
