Rare McMahan Patent (Star?) No 3 7500 V Sale

By Mark Grimek; posted April 29, 2015
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A rare Clear glass insulator with some of the original metal. One side may be embossed : " MCMAHAN NO3 7500 ? {faint embossing} and what appears to be a raised STAR " The other side " PAT. NO ? 72042 " on the other. The base is embossed " NO 3 / 7500 V " $65. postage paid . PayPal, Check, or M.O. accepted.

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