Here is an example of what I will call the 1st version of the alloy,
"Open C" Campagnolo shifter set. Note the horseshoe shape of the
C in "Campagnolo". The base of the lever on all Open C shifters is more
slender than in later versions- it is common to see the lever bent in this
area- it is supposed to be straight. This version is from 1953, and perhaps
part of a year before, and after. The shifter set that preceded this was chromed
bronze. I have confirmation of at least one Bianchi from 1954 that has the
2nd version, and at least one Bianchi from 1952 that has the chromed
Bronze version. Thanks to Kevin Stimpson, (owner) for valuable information. |
The distinctive feature on this 1st version of the Open C shifter set
is (are?) the "pimples" in the
"field" behind the letters. (As we all know, "bumps"
describe the raised things around the edge. These "bumps" do not
appear on the latest Record shifters from the '80's). |
On this 1st version, note the flat clamp band and silver colored
backing plate. Also note the slotted screw and nut that tightens the
clamp.

These tiny wedges were used to help secure the shifter clamp to the
downtube. One would fit under the clamp at the clamp tightening screw or
bolt.
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