Dave,
No arguments with what Cathy said .... except about the slide plate.
The Bel Air Bantam is a clone of the Singer 99K10. It is an aluminum 3/4 size machine and as such is more desirable to some people than the cast iron version.
I have one badged as a SEWMOR 303 and I didn't pay more than$50.00 for it, shipping included.
The slide plate can be had from Sew-Classic {
http://www.shop.sew-classic.com/ } for less than $10.00.
Joe