Great find OP. I have one that was made in the early 70's Maybe it's not one of the uber cool pre 64's but I'll still say the one I have shoots, and shoots well. Be sure to let us know how it does when you get a chance ot get it dirty.
A lot of people lean to the Marlin because of the ease of mounting a scope. Personally I don't see a need for a scope on a 30 30 but they can be mounted if ya want it bad enough.
I love the feel of a Winchester lever gun. I've had others and liked them . But it's just a lovin feeling thing with the Winchester.
I found this PDF
that shows manufacture years form serial numbers. I figure some of y'all out there might find it handy