Colnect-1079-989-Light-Spectrum.jpg
Source: Colnect
Issued by: Mongolia
Function: postage
Date: 3/31/1977
Issue: 250th Anniversary of the Death of Isaac Newton
Denom: 60m
Color: multicolored
Design:
Watermark: unwmk
Perf: 11.5
Catalog value:



External links:
Colnect 239188.._Mathematician