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chainset appears it may be Sugino Mighty while bottom bracket assembly is something else

the flats on the fixed cup are suggestive of metric or CH threading

the knurling pattern on the lockring is a match for what Peyrard (NERVAR) & T.A. employed to indicate Italian thread, although it certainly may have been used by others

note how modest is the engagement between the spindle and the NDS arm; perhaps a poor match...


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