Colnect-2895-569-Miners-Columns-and-Bohr-model.jpg
Source: Colnect
Issued by: Colombia
Function: airmail
Date: 4/10/1987
Issue: 100th Anniversary of National Mines Faculty of National University, Medellin
Denom: 25p
Color: multicolored
Design:
Watermark: unwmk
Perf: 13.5x13
Catalog value:



External links:
Colnect 570228.._Medellin_Cent

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