Re: [CR]Shimano date codes

Example: Framebuilding:Tony Beek

Date: Fri, 22 Oct 2004 08:53:26 -0400
From: "David G. White" <>
Subject: Re: [CR]Shimano date codes
References: <> <l03130300bd9eaca752fd@[]>

I agree, there is something strange about the Shimano date code list. I have a wheelset I personally built in 1974 with large flange 1st generation Dura Ace hubs (silver, not black). I just checked and both hubs are marked S D.

I notice the date code table on the CR website starts in 1976, so perhaps Shimano had a different code prior to then. Does anyone know?


David G. White Burlington, VT

stephen fredette wrote:
>how very strange. i have two sets
>of black dura ace hubs; one is marked Z I and
>the other Y F. as far as i'm aware the black
>components were only made early on.
> yr obdt svt
> Stephen Fredette
> Hull, Massachusetts
>>Note the Shimano date codes page at the CR site:
>>Z and J first generation?....Not according to the codes, way later.
>>Dennis Young
>>Hotaka, Japan (what a mother of a typhoon that just visited here)