-
I don't think that's the correct one, the bit underneath with the serrations doesn't look wide enough to fit on top of the post I have.
If I don't find the answer over the weekend I'll ask Mercian next week, so thanks for the heads up.
I think the earlier clamp versions were alu/silver but they later did black clamps but not sure if these were carbon or black alu, but I think they both had the same serrations, so either will fit.
https://www.merciancycles.co.uk/online-shop/campagnolo-seat-pin-headset/sp-re002/
Is this it? Mercian carry all sorts of vintage Campagnolo spares