What is the estimated value of a Improved Eldredge B Sewing Machine?

If the machine is in Excellent working order, comes with all its attachments and an instruction manual then you could expect to get anywhere from $5 to $50 for your machine. There is not much demand for sewing machines in general these days. Very few people sew.

Everything in the U.S. is now made dirt cheap in China or hadn't you heard.

Good Bye Sweet America.

Might get a better deal selling your sewing machine for scrap metal.

I hopes this helps.