I've got one that appears identical on my big red British bike...



darned if I recall the specifics on the quill... and it's not in reach right now.

However, I'm pretty sure that I got it from Rivendell, back in the day. This is from the 1996 Rivendell catalog. The Nitto Aero...




Presumably "Aero" is Nitto's terminology for the model, and not just Grant's.

Steve in Peoria