Canadian Spark Keys
(Click on the pictures below to see larger versions of the photo)
|  |  | Canadian Marconi Type 701 on slate base. | 
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|  |  | Canadian Marconi Type 702. Key on the right has been re-based on phenolic | 
|  |  |  | Canadian Marconi Type 705 | 
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|  |  |  | Another Canadian Marconi Type 705. Missing the nameplates, but it does have the auxilliary contacts | 



