Bike Forums - Help! Triumph serial number?

Okay, HELP!

I've trying for months to date my Triumph. There just isn't anything on the net. Any ideas?

It's a lady's one speed with a back coaster brake and 26" wheels. The thing is, it may have been a three speed at some point, but I have no way of knowing. The rear hub says "Resilon" with no numbers. There's no sign of it ever having had hand brakes. There are holes on the forks that are about the right place for a brake bolt but they seem kind of small - more like holes for a screw to hold a fender.

It's about the same shade of blue as a Raliegh Transit. Matter of fact, it now has a Transit chainguard. The match is very good but not perfect.

I know it's 1974 or older because it's got a '74 Burnaby Bicycle License on it.

If anyone has a serial number list for Triumph, it's 2764522.

Thanks!