I just got an older case tractor loader backhoe and i can't find the serial # . I'ts not on the dash and it does't seam to have a tool box.from what i have read they started in1957 on a 320, then between 1960-67 on the 430-530. the tractor has a jonhson bar to shift F-R. It has 5 levers on the tower(2 out side ones are for out riggers-same type as on newer machines) the swing is operated by foot bars,the swing is operated by 2 cyclinders sticking out. The engine is a 4cyc gas and the only # i can find on the machine are the ones stampt onto the engine 345s00474 . I would like to be more informed on what i have in case i need parts. if any one knowes of a different place i could look for the serial # i would appreciate it. thank you northern