That
Gresham & Craven Look absolutely identical .
I only don't know how to find out - what is the worth of my Seymour )))))
I have no idea how much your machine is worth. However, I can tell you that most vintage machines are not worth very much. Your machine doesn't appear to be in really good condition, which hurts it's value. Unless it's very unusual or has some outstanding feature that is only found on that machine, the market value will not be great.
Most collectors who are willing to pay big bucks want machines that are in great condition. It's my observation that those who are willing to totally refurb machines (make new parts, etc.) often pay very little for those machines.
Of course, I've been wrong once or twice in my life.
bkay