Stamp 63207 | StampData

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Colnect-140-558-International-Prototype-Metre---Krypton-spectral-line.jpg

What: stamp
Type: Switzerland postage 2/13/1975 15(c) multi issue=International Meter Convention 100th unwmk perf=11.5

State: mint

Visibility: public

Owner: Stan Shebs

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Creation date unknown