Mine is serial 303453. Per the info I have, Dave's is from first half of 1979, mine from second half of 1980, so they are not very far apart in time.
I guess we can say that "about 1980" must be when the "U" stock went from "type 1" to "type 2."
I guess we can say that "about 1980" must be when the "U" stock went from "type 1" to "type 2."
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