Dale Phelps wrote:
>
> I have a 1a stem with the smooth bolt/hex nut pinchbolt combination for handlebar clamping and am curious, anyone know the approximate date for this? Or ... perhaps easier ... when did cinelli go to the allen-bolt with recessed nut combo?
Around 1972 give or take for the recessed 5mm hex intro...
Chuck Schmidt South Pasadena, CA
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