Just a sincere thanks to everyone who posted me about this problem. I really appreciate all the information!
For what it's worth, I'm holding out for fully period-correct on this project, so I'm going to wait for a complete Campagnolo pre-1978 swiss bb, or, at a minimum, a campagnolo Swiss fixed cup! And go french for the rest.
Thanks again..if that bb or fixed cup shows up and you want to pass it along, please let me know.
Charles Andrews Los Angeles
"everyone has elites; the important thing is to change them from time to time."
--Joseph Schumpeter, via Simon Johnson