1958 was the first year.
Saturday, March 10, 2018, 17:20

In 1958 and 1959 Ruger messed with the competition by futzing with serial numbers, creating the "alpha cats" by numbering guns with 1-999 with alpha characters from A thru Y excluding "O". The gun here was likely made in late 1958.

I don't think they put the caliber on the guns until the "supers" came out in 1971 with the 91-prefix numbers.

Nice score at a good price.

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