Not to bore longtime CR list members with an old tale, but in 1989 I got a tour of the Campagnolo factory with three others that was lead by Valentino Campagnolo and lasted five hours (I was in the right place at the right time is all).
At that time Valentino told us that some of the parts were still hand polished at the factory but that most of the production was polished by robots. He said he was trying to eliminate the hand polishing because of the mess it made but some parts just couldn't be polished by automation.
The SL and SR pedal bodies would have been polished completely by hand and it would have been up to the worker and his boss as to how much of the casting seam was removed. I have a pair of early Super Record pedals on my Confente that have the casting seam removed like the pair on eBay.
I think it is important to remember that when the Super Record group was introduced in 1974 it was a big deal with Tullio and it's not hard to imagine that the early SR pedals were finished to a higher degree just out of pride.
All of the above only opinion...
Chuck Schmidt South Pasadena, CA
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