It is my OPINION that the flat bladed QRs with conical end nuts were limited to the 5 speed / 120mm OLD which is 5 speed.
Best I can determine from your description the end nut with "2 coin edge bands" is a Tipo part. All record end nuts will have a chrome loop. The later model record end nut will not be conical, but slightly domed on the end to account for CPSC regulations.
> I have a question about the proper vintage and type skewers to match the
> first generation Super Record rear derailer. I've seen Campy flat bladed
> skewers with small acorn nuts securing the handles as well as ones using "C"
> clips. Are both of them Record type or is one from a lesser gruppo, or are
> they of different vintages (or both) ?
> I've also seen different "vintage" skewer nuts, one conical with two "coin
> edge" bands and one conical with chrome loop. Are these from different
> vintages or different gruppos? I've also seen the cap portion (through which
> the lever fits) with lettering engraved and plain caps as well. What's up
> with that?
> Thank you very much in advance for you guidance.