Vintage Telegraph Apparatus Comapny (TAC) Semi automatic bug telegraph key Model 810. . Made in Chicago, IL, USA.
TAC was company owned in part by Ted McElroy and these keys were produced 1944 – 1946. It is a chrome plated key with chrome plated square cornered retangular base. There is a unique round hole in the frame for the lever. Unsure of the actual year of manufacture of this key..
NOTE: the weight on the vibrating arm is likely not original and does not have a retaining screw.
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