I am struggling a bit on that one Maurice as my memory fades badly, I do remember that they were a useless pair of mirrors and after a couple of years of ownership I had to make handlebars that suited me, which in turn meant shortening the fairing, which then meant losing the mirror mounting points, so no more fairing mounted mirrors since then, the reason that I cant recall what make they where is because I haven't had them for 38 years! what I do recall is that someone discovered that they were, or were very close to, a door mounted mirror on Ford cars, was it the Escort???
not much help, was it.
CLEM