Peter, Your frame is not older than 1987 because that is when the 105 groupo with biopace chainrings where introduced. The transfers on the frame indicate that this is how the frame was originally equiped. Hope the info helps, Robert St.Cyr ASUCD Bike Barn Davis, Ca.
>From: "Peter Brown" <peterg.brown@ntlworld.com>
>To: <classicrendezvous@bikelist.org>
>Subject: [CR]Dating a 1980s Raleigh Corsa
>Date: Wed, 15 Feb 2006 09:16:50 -0000
>
>I have had several enquiries regarding the age of the Raleigh Corsa
>frameset
>I have listed on ebay at http://cgi.ebay.co.uk/
><http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=7219332207
>&ssPage
>Name=STRK:MESE:IT> &rd=1&item=7219332207&ssPageName=STRK:MESE:IT
>, some
>suggesting that it is earlier than the mid 80s I thought. (In which case
>bringing it neatly on topic!).
>
>
>
>The frame number is B15266 stamped on the underside of the bottom
>bracket.
>I presume, therefore, that it is not 80 or 81 Worksop built, and it does
>not
>have the letters associated with an Ilkeston build, although one
>correspondent has suggested that there are build similarities with the
>Ilkeston frames. There is also what appears to be a serial number on
>the
>decal below the 531 decal, which is 03586540.
>
>
>
>Do any of the above numbers make sense to any list member, and so allow
>me
>to give those interested some better information?
>
>
>
>Peter Brown, Lincolnshire, England