Please can you match this crank

A home owner from Casselberry, FL says:

The only identifying markings in side the main casting is Patent # 19A202 and another line with R.D. 1963. I have submitted a picture and a drawing with dimensions.

Rob

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Bob from SWISCO responded:

See our 39-259 Operator. This looks quite similar, but review the pictures on the shop page, compare the dimensions to your old part, and see what you think. 

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