• You're right about the pantographing - a quick google image search showed only a couple of ciocc's that didn't have pantographed seatstays - and the fork crowns were all sloping ones with the 4-leafed clover containg card suits - so if it is a Ciocc it may be older than you think - or perhaps one of the lower-end italian-market jobs.

    If Ciocc don't get back to you there's bound to be people posting serial#'s on the web - try searching for those

    Why did the LBS think it's columbus? was it just the seatpin diameter not 27.2mm or do they have another way of determining it

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