That is a Singer 66, electric motor, with reverse/back tack. The serial number is on the base, below the gold tone Singer badge. You can look up the serial# on ismacs.com
I would estimate a 1940s model. It may need new power cord, pedal cord, about $25 for the pair, and easy to replace. If these wires are in rough cobdition, expect the motor wires to be in same, and in need of replacing. It takes standard needles and class 66 bobbins.
As to price,good condition, with attachments, in my neughborhood, selling at $50. If cabinet top in good shape, worth a bit more, maybe $65. This one has significant damage to the shellac clear coat in the front/middle of the bed, and the head looks dulled, whether nicotine, kitchen grease, or humudity, I cannot tell. It should be shiny. My recommendation, not over $30.00.
Last edited by WIChix; 10-18-2020 at 06:56 PM.