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2nd Engineers & Technicians Congress issue of Romania

  • Colnect-4398-526-Slide-ruler-slide-gauge---atomic-model.jpg
  • Colnect-4398-529-Slide-ruler-slide-gauge---atomic-model.jpg
Short desc: 2nd Engineers & Technicians Congress

Issuer: Romania
Date: 5/29/1957
Sort position: 2
Occasion: 2nd Engineers & Technicians Congress


Consists of 2 stamps: (See stamps as list)

55b bl
55b brnred

All are d=slide rule & calipers & atom symbol wmk=RPR mult endless perf=14x14.5


Record of changes




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