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This appears to be 1950's Dutch 'Pertrix' safety lamp with green & red filters. Appears to be mechanically sound.
This extra info is courtesy of an email I received, many thanks for the person who sent it
Marked by Pertrix - This Pertrix Nr 667 made in the year round 1950-1970..>>see Pertrix 1950 catalogue<< with the following next types out of that year
RP 23 stamps marks means Reddings Ploeg Holland ‘’BB’’ Rescure-workmen use by flood inundation disaster 1953 in Zeeland = Holland.
Best Regards
Pertrix & Daimom museum collector
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If you've got any questions, then send me an email.
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