Another thing to take into consideration, aside from availability, is the wiring. On most vintage Singers the wiring is going to need replacement. The cord set may look fine, but if you look at the wiring where it comes from the motor and light into the back of the electric connection on the machine, 9 times out of 10 you will find wires that are flaking, sticky from being exposed to grease from the grease cups, or cracked from age, and will have to be replaced for the machine to be safe. If you can do the work yourself - great! If you can't - not so great.