Serial Number for a multi year production

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November 3, 2024 at 1:16 pm #291897
PETE DEVITO
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I have a TD-20 Johnson that had a production from 1946 – 1949 it shows. I have serial number 573096, how do I know what year this engine was manufactured. Is there a chart that shows serial numbers within a year of production.

Thank you
November 3, 2024 at 2:25 pm #291898
Steve D
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Looks like ’47
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