Originally Posted by
SJX426
Makes me wonder if someone dimpled the CS to accommodate a poor chain line due to the wrong spindle or using a triple, again with the wrong spindle.
No, the OP's bike has bike factory dimples in the stays. It's nearly inconceivable that was done after the stays were brazed into the frame. Your stays are round oval round, which is done by the tubing manufacturer.
I don't think I could get ROR columbus stays back in the '70s and early '80s. In any event, I have dimpled many round columbus stays, really hard to get a crank or tire to work otherwise. Might not be easy for the uninitiate to tell that the OP's stays are not ROR, but they are totally different.