If the machine is going to stay in Florida, I'd say a Singer 401 or Singer 500. That may be a couple years earlier than 1970, but they are good work horses, have a variety of stitches (with cams), and you can probably get one in a cabinet for not a lot of money, maybe $40-$60, depending. The only thing to remember about these machines is that you have to oil them again before using them if you let them sit. Also, be very careful/gentle with the door/hinges on the far left of the 500, over the needlebar.