I don't have any plans to refinish the cabinet any time soon. I've done my time picking paint out of wood pores and really don't want to do it again. I have been doing some more looking around and my machine seems closer to being a model 66 than it does a model 15. I found a model 66 on the internet that's a dead ringer for mine, plus the model 15 shows a vertical bobbin and mine is horizontal. Strange though, the Singer site shows the serial# range as belonging to a model 15.
Rodney