Stamps, chemicals design
1 to 3 of 3
Russia
postage1965, Aug 5 technological development issue unwmk p. 12
| X | 3k | multi | chemicals |
Denmark
1968, Oct 24 Danish industry p. 12.75
| X | 50o | brn | chemicals |
Romania
1962, Oct 12 4th Sample Fair issue p. 13x14.5
| X | 20b | multi | chemicals |
1 to 3 of 3