Your lamp
I read your posting this morning and now I'm watching an old rerun of the British show "Heartbeat" and there the lamp is on Nick Rowan's desk! The show is from 1992 but depicts the Yorkshire constable in 1968 going to be an RCMP officer in northern Alberta. The lamp appears 3 times and it is lit up and you can make out the 2 rows of slits in the shade as well as the base and the wiring going into the rear of the arm. Maybe your lamp was a prop on the show.
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