Well, that's a Wireless Set No.1 all right. 
 
Description is just below the watch holder and between the two hinges: 
 
Wireless Set No.1 
Ser. No. 569            (I think) 
M.W.T.C. Ltd            (Marconi Wireless Telegraph Company Limited) 
   1938 
     /|\ 
 
So British manufactured. 
 
Chris.
		 
		
		
		
		
		
		
		
		
	
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