Colnect-4465-199-J%C3%A1nos-Bolyai-1802-1860-Hungarian-mathematician.jpg
Source: Colnect
  • Colnect-448-650-J-aacute-nos-Bolyai.jpg
Issued by: Romania
Function: postage
Date: 5/15/1960
Denom: 1l
Color: dark green blue
Design type: famous men (1960 Romania)
Design: János Bolyai
Watermark: RPR mult endless
Perf: 14
Catalog value:

In collections: some private

External links:
Colnect 134660..versaries_1960