We have had this in our closet for at least 30 years and it has not been touched! I just put the plug in, dusted and sewed a nice seam. Tension feels fine. There is a knee control and not sure if it is the cabinet or whether a knob is missing but I had trouble easily getting to the knee control and used my hand to test. It could be my inexperience with knee-controlled sewing!
I believe from my research that this is a model 66. I am not 100% sure. I am positive it is from 1931 based on the serial number which is AD-323.234. Per the Singer Company website, January of 1931 is the manufacture date. Wow, 86 years old!
It is in a wood cabinet that seems sturdy but shows wear. See pictures.
Everything looks to be original.
Local pick up only. Sold as is and payment expected within 3 days of close of sale. Thank you for looking.