Stamps of Vietnam, purbrn&yelgrn color
1 to 1 of 1
postage
1985, Oct 5 30th Anniversary of Geological Service issue unwmk (no perf info)
| - | 1d | purbrn & yelgrn | Geological research by airplane |
1 to 1 of 1
| - | 1d | purbrn & yelgrn | Geological research by airplane |