Colnect-2406-060-Scale-for-equivalence-of-heat-and-energy.jpg
Source: Colnect
Issued by: Germany
Function: postage
Date: 11/3/2014
Issue: 200th birthday of Julius Robert von Mayer
Denom: 90(c)
Color:
Design: Scale for equivalence of heat & energy
Watermark: unwmk
Perf: 13.75
Width: 44.00 Height: 26.00
Catalog value:



External links:
Colnect 513661..deral_Republic

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