Old 09-06-13, 08:20 PM
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marcpro
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T-mar: Seat tube diameter 1 1/8" exactly. Seat post is just a tiny smudge over 26mm, sorry I don't have a precise measuring tool, just a good quality crescent wrench with mm markings on it. It shows just a tiny tiny bit over 26mm, so maybe 26.2?

Originally Posted by T-Mar View Post
Yes, it could be a Sekine but in that case, it's definitely not circa 1975, as I was a Sekine dealer back then and there's lots of discrepancies on the frame, besides the serial number. Assuming it is a Sekine, we're talking circa 1981/1982, in which case it would be an RM22, which was an upper entry level model with a hi-tensile frame. What's the seat post diameter?

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Last edited by marcpro; 09-06-13 at 08:31 PM.
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