Sýni: Gvæjana - Official stamps (1981 - 1988) - 1 frímerki.
7. júlí WM: 1 Götun: 14
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![[Postage Stamps Overprinted "OPS" - 3mm High, tegund H]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/H-s.jpg)
![[Postage Stamps Overprinted "OPS" - 3mm High, tegund H1]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/H1-s.jpg)
![[Postage Stamps Overprinted "OPS" - 3mm High, tegund H2]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/H2-s.jpg)
![[Postage Stamps Overprinted "OPS" - 3mm High, tegund H3]](https://www.stampworld.com/media/catalogue/Guyana/Official-stamps/H3-s.jpg)
