Paint recommendation ...
Hi Derek,
I have used Rustoleum White Appliance Epoxy spray paint successfully when I re-painted my 1948 Kenmore wringer washer. Be careful not to spray on too heavily at first, or it does run. Best to do several light coats.
As you're probably aware, only the bottom skirt and legs, and the wringer assembly, are "paintable" steel. If you need to do any repair work on the porcelain tub, I would recommend a liquid porcelain repair enamel that comes in a little bottle with a small brush. You can do spot repairs quite successfully with it. Regular spray paint will never stick properly to the enamel tub.
Have fun with your restoration!