I think the number on the inside of boot is 0335. Right boot is stamped Red Wing on the upper just behind the pull on loop. It is also stamped with a 9 and a 1.

 I do not know what any of these numbers mean but from what research I did online I think these boots are 1960s vintage. They are still soft and pliable. There is still some old boot polish on these boots and some scratches and scuffs. I am selling these in as found condition but these should clean and buff out to beautiful condition . I think these boots have not been worn much. I think these are the original heels and soles are still on them and the heels really dont show much wear. See pics for best item description and condition.