Colnect-2217-199-Power-Dam-on-Rio-Negro.jpg
Source: Colnect
Issued by: Uruguay
Function: airmail
Date: 1941
Issue: Rio Negro Dam
Denom: 68c
Color: violet brown
Design: dam (1937)
Watermark: unwmk
Perf:
Catalog value:

Overprints on this type: (See as list)
postage 1/9/1946 20c ovpt=CORREO//INAUGURACION//... oc=blk

In collections: used (Stan Shebs)

External links:
Colnect 490486..m_on_Rio_Negro