Hi Gary, you seem to be the guru of the 200 series. I have only just got mine free and running like a beauty. Currently driving it around ready for a total restoration. I think I have the original seat, but when the tractor was cut up as a crane, the original seat spring has been lost. Do you have, or any of the readers have any pictures of the 203 seat and spring. The whole back picture would be great. Thanks....Buck.