Now showing: Colombia - Postal tax stamps (1950 - 1959) - 11 stamps.
25. May WM: None Perforation: 11
![[Not Issued Stamps Surcharged, type R]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/R-s.jpg)
26. May WM: 2 Engraving: American Bank Note Co. Perforation: 12
![[Postage Stamp of 1949 Overprinted "SOBRETASA", type S]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/S-s.jpg)
WM: 2 Engraving: American Bank Note Company Perforation: 12
![[Postal Tax Stamp of 1948 Surcharged, type T]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/T-s.jpg)
1. May WM: None Engraving: Waterlow & Sons Ltd. Perforation: 12½
![[Red Cross, type U]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/U-s.jpg)
![[Red Cross, type V]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/V-s.jpg)
WM: 2 Engraving: American Bank Note Company Perforation: 12
![[Postage Stamp of 1952 Surcharged, type W]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/W-s.jpg)
10. June WM: None Engraving: Waterlow & Sons Ltd. Perforation: 12½
![[Red Cross, type V1]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/V1-s.jpg)
WM: None Engraving: Talleres gráficos - banco de la república Perforation: 12½
![[Special Delivery Stamp Overprinted, type X]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/X-s.jpg)
2. May WM: None Engraving: De La Rue Perforation: 13
![[The 300th Anniversary of the Death of St. Petrus Claver, type Y]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/Y-s.jpg)
1. June WM: None Design: Mosdóssy Engraving: De La Rue Perforation: 13
![[Red Cross, type Z]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/Z-s.jpg)
2. June WM: None Design: Mosdóssy Engraving: Imprenta nacional de Austria Perforation: 11½
![[Red Cross, type AA]](https://www.stampworld.com/media/catalogue/Colombia/Postal-tax-stamps/AA-s.jpg)
