This was the 350th Ct1 built. Serial # is 000350 engine and frame match. 1/69 stamped on frame backbone. Hardest part to find was the pipe, only used the 5 screw pipe on 69' and 70' models. Still rides great! I left a few original "boo boos" on the bike because we both remember the scolding I got the day I tore the seat and bent the gauges going over the handlebars. "Son, you could tear up an anvil" :)