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-   -   Serial Numbers Decoded (https://forums.thepaceline.net/showthread.php?t=99078)

oliver1850 07-05-2021 09:50 PM

Quote:

Originally Posted by racemanspiff (Post 2950825)
Hello,
New to the forum, but a vintage cyclist (53yrs young). I have a CSI that I am trying to determine what year it was built. The serial number is CC 59 1114, what is strange is that the top tube is long like 60.5-61cm ctc, the seat tube is 59cm ctc and the head tube is 176mm, it has a F1 carbon/Ti 1" threadless fork.

Unfortunately this bike just sits as it is just a little too large/long for me, it is for sale as a frame/fork/Chris King headset/Deda 100 cockpit. It was resprayed with Dupont Imron and is stunning in the sunlight.

Great looking CSI. Serotta was building at least 300/year, so I'd say yours was made in 1998. Might have been made in 1997 but no way to tell without the original paint (and anniversary decal). Standard geometry CSI would have CS prefix. Your CC designates custom geometry, so that explains the long top tube.

The 1998 catalog shows head tube mounted cable stops instead of the down tube shifter bosses. That may or may not indicate that your frame is a 1997. Since it's a custom, the buyer may have specified DT shifter bosses.

fourflys 07-25-2021 07:24 PM

Hey all, figured this question from my other post most get some more traction in this post...

Serial # CLS 57 134

I know this is a custom Legend ST, 57cm seat tube, and was the 134th built.

My question is this, what year do you all think this bike was built? It has the C4Ti tubing sticker and an S3 fork (can't confirm if fork is original though). I would assume this was a somewhat early bike, but since I have no idea how many of the Legend STs they built...

Thanks!

oliver1850 07-28-2021 03:25 PM

I would say 2003 or 2004. If it has the exterior milling on the head tube it would be later.

fourflys 07-28-2021 07:19 PM

Quote:

Originally Posted by oliver1850 (Post 2963112)
I would say 2003 or 2004. If it has the exterior milling on the head tube it would be later.

Thanks, that's kind of what I figured. I don't think my HT is milled from me looking at it (seems pretty straight).

oliver1850 07-30-2021 10:15 AM

I think that you would notice the milling. It leaves a definite ledge near the top and bottom of the front of the head tube that tapers off into no ledge at the rear.

henrypretz 09-23-2021 09:14 AM

Hey there Serotta experts - I am looking at a bike that I can’t quite figure out the “model” of. It is Ti and is described as an all arounder and not necessarily a purpose built cross frame. Linear pull brakes. 3D type dropouts, down tube cable stops.
Serial number reads CCU 54 055
I was under the impression that the first “C” indicates custom, but don’t know model what the “CU” would identify as. Or is the “CC” indicative of a Colorado and the “U” something else?
In the end it doesn’t really matter, but would be nice and kind of fun to figure it out.
Thanks in advance.
Henry
https://uploads.tapatalk-cdn.com/202...49c8fe2d7b.jpg

https://uploads.tapatalk-cdn.com/202...a19462b32.jpeg

https://uploads.tapatalk-cdn.com/202...885ca65001.jpg

oliver1850 10-06-2021 10:29 PM

I would say it's a custom and the model is CU. Some detail photos might give a clue as to what the model actually is. 1 1/8" head tube? What is the fork? Does it have down tube shifter bosses?


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