I am looking for vintage sewing machine presser feet or feeder feet?

Question:these feeder feet have the name of the co. as GREIST along with the numbers imprinted on the presser feet. These are about 60 yrs old maybe older. I can only find a few that can be replaced, along with what they do.

Answers:
Have you tried using a modern one? If the screw hole lines up, it would probably work.