Category:Rotary telephone switch - CnAM 18425

**Rotary telephone switch - CnAM 18425**
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Instance of	telephone exchange;
Location	Musée des Arts et Métiers, St-Martin-des-Champs Priory, Paris, Grand Paris, France
Collection	Conservatoire national des Arts et Métiers;
Inventory number	18425-0001- (Conservatoire national des Arts et Métiers);
Inception	c. 1930;
Authority file
	Q113172107;
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Media in category "Rotary telephone switch - CnAM 18425"

The following 3 files are in this category, out of 3 total.