There are no logos, characters or otherwise identifying markings on them that I can find.
What I can tell you about them:
700C X 21.17 MM in width
Laced to Campy Record hubs
Spoke nipples have a raised "S" on them as viewed from the ends
Installed on a '74 Raleigh Super Tourer as an "up-grade" by the LBS / Raleigh dealer when purchased
Alloy sew-up
I'm curious.
TIA