• Colnect-3996-503-Block-Centenary-of-Mendeleev--s-Periodic-Law-of-Elements.jpg
  • Colnect-194-206-Block-Centenary-of-Mendeleev--s-Periodic-Law-of-Elements.jpg
Issuer: Russia
Issue: Periodic Law 100th
Date: 6/20/1969 (1969 sheets)

Block 1 (1, 1 x 1)
1, 1: 30k d=sheet



External links:
Colnect 88597-..iet_Union_USSR