Another one found its way to me.

[Cobia]

Yeah, Ray,
Me thinks it's a sunbleached factory frankenbike speedo, considering that the engine does sound like a 10K mi engine. Too bad the tranny is not the same.
What I can't figure out is why someone would install the '79 and earlier carbs!!??

[DiverRay]

The early carbs do NOT have the "hidden" mixture screws. We used to think we could get a little more power from the earlier carbs. But then, I had a '78 at the time, and already had the power!!

[XJOK2PLAY]

Hey, Cobia...

Looking at the pics of the speedometer you posted, even where it has the KM/H, it's yellow too... so I doubt it's from sun fade or bleached out...
Looks like a rare one to me!

May be a franken speedo from a Canadian or Aussie bike or something... probably a replacement from ebay at one time...you've probably been PO'd...

Doubt it came that way new... but that would be cool to learn if it did!

Great deal, anyhow you slice it... and great to hear it runs & sounds solid!

Have fun...