mtna_buzz

Hey all, I have two '74 TY 250's one with frame/engine VIN that match (the full 434-000245) and one with the full frame vin (434-015952) and no number stamped on the motor case pad. It has the factory raised fins in that area (hasn't been modified)- just no stamping. Both of these bikes are original - no indication that they were ever used for more than recreational riding. Also, the barrel on the one with no numbers also has fins all the way around (above the exhaust port) while the other has a gap in the fins in that area. both of these are the full wide case early models. I'm just curious about the lack of a vin stamp/barrel changes in the one - is it common for these to not have a case vin? From the frame # it's about 15,000 behind #245. Does anybody know how many of these were produced in each year? My first bike was a TY 80 in '75 and I couldn't pass on picking these up last summer - it's been a lot of fun riding/wrencing on them since! Thanks for any info - Jim