Hello people, I'm looking to identify a frame which has been sitting in our garage for about 15 years. It was bought by me in about 1993 as a general hack, but I now want to know more about it. The closest I have got is a possibility that it is a Mercian. Frame numer is under the BB, it has EO within a diamond shape, then just below and offset is 250 12 81. Now, I know Mercian had a sytem of numbering which had the year number at the end or beginning and the builder code nearby, but there appears to be an extra digit here which is confusing me.

The lugwork is similar to Olympic or even (crosses fingers) King of Mercia models from early eighties. The Reynolds 531 transfers are the only markings that remain, but strangely don't appear to have laquer over them.

Images (can't seem to get them to embed...) - Here is the frame number:
http://picasaweb.google.com/amcdonal...15785862462466
and here is some lugwork:
http://picasaweb.google.com/amcdonal...15923405657570

There are some more pictures here:
http://picasaweb.google.com/amcdonald1961/2501281

Drop outs are Campagnolo, groupset has been changed at some point to Shimano 105 Golden Arrow, but may have originally matched the Headset which is Shimano 600.

My Mercian idea may be pure fiction... maybe I just want it to be Mercian, having lived near the shop in Derby many years ago. Anyway, any help and advice gratefully received. I'd love to get the bike restored if it is worth doing, 2 of my sons are getting into Track cycling now (it's a British thing) and I need some way to marginally impress them!

Alastair