Colnect-2156-427-Unsaturated-Hydrocarbon-Molecule.jpg What: stamp
Type: Mexico postage 12/7/1973 40c multi issue=chemical engineering school 25th d=stylized hydrocarbon molecule wmk=MEX & eagle perf=14

State: unused

Visibility: public



Owner: Stan Shebs




Created July 3, 2012, 9:37 pm