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thank you for all of the new information and imagery
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appreciate sorting of serial; was unable, with me auld occipital receptors, to get anything from the original likeness
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anterior mech -
the ivory coloured plastic knob marks it as too late for a machine of mcmlviii. knobs remained metal through mcmlix and plastic came in in mcmlx
it is not the commonly seen Competition model front mech but one of the Randonneur iterations. these operate by moving the lever front-to-back rather than inward-outward
Juy catalogue page of mcmlx:
both clamp-on and braze-on models were produced:
if the mech were original to the cycle for the mcmlviii date it would be Simplex of Italy, rather than of France. Juy maintained a facility in Italy during the mcml's.
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bb spindle -
there is a technique termed "hard chroming" to add metal back to the bearing races which can then be reground
had this done once on a Verot model 34 spindle. it came out beautifully. unable to comment upon cost as it was performed on a favour exchange basis with a cycle customer whose employment was at a shop which repaired "rotating equipment"
probably have an official ATALA cottered bottom bracket assembly in excellent nick within me parts drawers. it will be a bit later than the bicycle if that is OK.
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frame ends -
since bow & stern not a match it raises question of "is fork original?"
crown is an Agrati pattern but not the one normally associated with the "BRIANZA" pattern lug ensemble
it is a close cousin of the pattern seen on Galmozzi and Ideor cycles of the late nineteen fifties and early nineteen sixties
the integral seating pad for a brake caliper is a feature not previously encountered
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stem & bar -
the Tecno Tubo Torino stem you propose to employ has a clamp size of 26.0mm whilst the Belri bar is likely to have a centre diameter of 25.0mm
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