Originally Posted by Mickey2

There is a chance the old Alfa is made in Spain or France, even with the Singer type stitch length lever. I generally keep the original finish, cleaning and polishing do wonders. Resin based car polish (liquid whitish stuff) lifts up grime and restore finish quite well. Chips and cratches can be filled in, minor touch ups done carefully will blend in fine. I allow signs of age and wear on a machine, and I suspect the Alfa is in good enough condition to clean up very well.