Originally Posted by
Old Fat Guy
It's all good. Just take the Shimano stuff off and put the Campy back on.
I think the Campy half is not mounted properly, from looking at your picture, but I'm seldom correct.
OFG is correct. The Shimano backing completely covers a standard derailleur braze on. Remove it and install the Campag shifter you purchase. I see no problem with the currently mounted Campag shifter...it just does not look as neat.