31.8mm Clamp On. Bottom pull. There are marks and wear consistent with age and use.
Shimano Dura-Ace FD-7800 10 Speed Clamp-On Bottom Pull Front Derailleur
Shimano Altus CT91 Front Mech Derailleur Gear 2 3 Speed E Type Bottom Bracket
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Shimano stx-rc FD-MC36 front mech derailleur 7/8 speed bottom pull 34.9
NEW OLD STOCK VINTAGE SHIMANO FRONT MECH FD-TY20 ,CLAMP ON,WITH HOUSING STOP
