Stamps, yel&dkbl color
1 to 3 of 3
Liberia
postage1901 1901b issue unwmk (no perf info)
| - | 10c | yel & dkbl |
El Salvador
official1906 1906 official b issue
| - | 50c | yel & dkbl | Pedro Jose Escalon |
Venezuela
postage1984, Oct 28 18th Pan-American Union of Engineering Associations Convention issue p. 11.5
| - | 2.55b | yel & dkbl |
1 to 3 of 3