Old 03-26-18, 05:29 PM
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I agree with it being a Panasonic but believe the lead character in the serial number is a '3', as opposed to an '8', making it a 1983 or 1984 model. This fits well with the September 1983 code on the Sugino Super Maxy cranks, which were OEM spec in 1984. In which case, the frame material is CrMo in the main tubes. Butting is not mentioned, so they're plain gauge, probably Tange #5 equivalent, which also would use a 26.6mm post. The spec forks were hi-tensile, so these are likely replacements.
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