Ron give it a good going over when you get it. Those were built to last. Even it if seems rusted and worn out it most likely can be made to work. The 206, 306 and 319 and now we see a 320! Info mainly on the 319 which may be of use for you:
http://www.quiltingboard.com/picture...c-t162425.html I was learning a lot from that machine and all the real experts have chimed in with good info! I'm, sure if you dig you can find a lot more info on line. You want to make sure the timing is set for the correct needles. If it works with the correct needles just get the correct needles. I know some people attempt to change them over but I don't think you would be happy.