From Stamps of the World
To see only pages that require images (have placeholders with no image) visit : Colombia Image Requirements
See https://commons.wikimedia.org/wiki/Stamps_of_Colombia,_1859-1900 for a gallery of stamps until 1900, including forgeries.
This category has the following 4 subcategories, out of 4 total.
Pages in category "Colombia"
The following 26 pages are in this category, out of 26 total.