I have a sewing machine that has Wilson on it. And on the moter it has Whte sewing machine corp. And t has a light o sew by. t has different letter and no.on it but on the motor it has E-634 on. I think it was made in 1948 0r 49. It doesn't have the petals on it, it has a lever that comes down and you press your knee on it to start sewing. Does anyone know about how much it's worth ?