This lens belongs to the first series of Industar-22.
Inspired by the 3,5/50mm Fed lens, perhaps even with common parts, but with the new diaphragm scale.
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K330 by Princelle.
The front of the lens is in aluminium and the diaphragm cursor is small.
Weight: 117g
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Lens on photo 1 was mounted on a Fed-Zorki 1948.
Serial number: 11558 (Jacques M. coll.).
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