This a part from a new piece of Berthoud hardware. We’ll send a Berthoud catalog to the first person who identifies it.
My guess is a cross piece for a decailure that replaces the lower 2 bolts on a 4 bolt threadless stem.
Hey Bill, That there is the piece that connects the two front-to-back extension rods of the Berthoud Ahead decaleurs to the lower stem mounting bolts
That wasn't as hard as I had hoped it would be. Andre, and Dave, send me your address to bill(at)wallbike(dot)com and I'll get the catalog out to you.
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Bill Laine started Wallingford Bicycle Parts in 1995.
My guess is a cross piece for a decailure that replaces the lower 2 bolts on a 4 bolt threadless stem.
Hey Bill,
That there is the piece that connects the two front-to-back extension rods of the Berthoud Ahead decaleurs to the lower stem mounting bolts
That wasn't as hard as I had hoped it would be. Andre, and Dave, send me your address to bill(at)wallbike(dot)com and I'll get the catalog out to you.