John, The cap nuts are as I got them. One is a little wrench marked. I imagine they would be tough to source.Greeves in England has the rights to Progressive Metals [O.E.M.], but I doubt they have parts for the 1 5/8" fork. My stem nut was missing, I ended up using a [1950 ish I think] Norton clutch hub nut in stainless. If you find a source for cap nuts, or a reasonable price to machine them, I would love to know!
Scott M.