Second with positive review of Greg Softley. I got chainrings and shifters ( early Campagnolo) from him at a reasonable price , new. I had to wait about a year for the chainrings and in the interim found a nice panto stem that was period correct for my mid seventies Super. The great thing about the chain rings is they are new! Also 53/41 Super Record style with 144BCD. I am still looking for a seat post but I’m not gonna pay $400. The stem was $130 .

He had shifters in early or late style

The chain rings fit nicely and look great with the Ambrosio crank

Best pic I have that shows the stem , sorry