Y00PER...As far as your question, you'll have to determine your specific model from the catalog scans. By 1963, Wilton changed the
conventional nut models to a new "640" line of utility vises. They also dropped model no.664, leaving only the 663-1/2 and 665 as advertised models.
The new "640" line of utility vises had a very long and productive life, ending around 1990. You own a neat little piece of Wilton history. Enjoy your new vice!