Vintage? Fisher? Help!
 

About 10 years ago, a co-worker gave me a beat up bike frame. The serial numbers were still intact and legible, so I didn't fear for it being stolen. I have been doing some research lately, but have hit a wall. I was told the frame was an older Gary Fisher, but have had no way to verify this, and I'm hoping you can help. The numbers on the frame are: GBI-1123 C37D9353 on the other side is WTU 061C1498B

Do these numbers mean anything to anybody? My local bike shop can't/won't help me out. I can certainly post some pictures of they help.

Post some pics of your bike to a free site like Flickr and then post a link to them here.

I bought a rather battered yellow Gary Fisher Piranha steel frame few years ago for next to nothing just to ride locally & not worry too much if it got stolen. It had blow out soon after & it's been hanging on a rack in my garage ever since. Just got it fixed up yesterday with new tyres etc - running fine. It's serial numbers are: 00000436S WTU. Other way up: GBI-1123. Below that: GU927052. Was wondering if 92 referred to it's year. I'm in UK.

A Piranha may be much newer than '92

A little strolling through Bikepedia seems to indicate that the Piranha model came out in '97 and that would make it a Trek Gary Fisher.

The G-code is consistent with Giant manufactured product and indicates a frame manufactured during weeks 39-40 of a year ending in 9. If, as BG states, the Piranha was introduced in 1997, then it should be a 2000 model.