• This looks a similar shape to my Mercian for what its worth. I think they were called Micro TT frames (?) and meant to run with a ton of seatpost showing. Mine also looks just like a small frame, but held against a second 'standard' (sloping top tube Lo pro), which is approx 54cm square equivalent, all the contact points are in the same place. Obviously this could be completely different with the Roberts above.

    Looks nice, i'd be tempted.

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