She resembles the Singer model 15-30 that was converted from a treadle to electric machine. The Singer 15-90 had a belt too. It also had a bakelite plug on the side where you plug the power cord to the machine. It's only a subtle difference. Neither of the Singer models had a lever on the top of the bed to lower the feed dogs. They and your 201 have a thumb screw under the bed instead.
Last edited by pennycandy; 05-22-2016 at 08:31 PM.