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Old 11-01-25, 23:58
David Dunlop David Dunlop is offline
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Join Date: Feb 2006
Location: Winnipeg, MB, Canada
Posts: 3,624
Default COIL, Aerial Tuning No. 2 A. ZA/CAN 4725

Time to back track a little.

Back on Page 37, in Post #1097, I hd commented on finding numbers stamped onto the two phenolic resin side plates and bottom plate of the coil chassis: four digit numbers in blue ink. This was present on nothing coil chassis I have on hand and the three numbers on each chassis were matched sets. I hd assumed at that time these were possibly production control numbers, but looked rather sophisticated compared to the large hand written similar numbers found on the main component chassis of the 52-Set.

Well, when looking at the rear of the front panel from my parts coil assembly today, I noticed another faint four digit number, hand stamped in blue ink, in the upper right rear corner of the front panel, just beside a small circular Canadian Marconi Company inspection stamp with the number ‘686’ inside the circle. These markings bracket the two mounting holes in the front panel for the Plates, Phenolic, Calibration. When I checked this number ‘8798’ with those found earlier on the three coil chassis plates, they all matched. Interestingly, the assigned Serial Number for this coil assembly on its Data plate happens to be ‘8963’.

The dilemma is that the other coil assembly I have bears the stamped number ‘3978’ and that coil assembly is missing its data plate, and adding more mud to the waters is the fact serial numbering for the 52-Set started at ‘5001’. And the rear side of that coil front panel has been wiped clean at some point, probably during a workshop rebuild.



David
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File Type: jpg Coil, Aerial Tuning No. 2 A 104.JPG (282.5 KB, 1 views)
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