This optical one in the above is the lens whose nameplate
has a red ring on it. It has a totally different exterior.
Mamiya might have made this (type II one touch) lens,
or Tokina might have made ML Zoom and this together,
since all the long FL lenses for Yashica were by Tokina.
The design is much closer to Vario-Sonnar 80-200/4's,
and they all five are true siblings design-wise I suspect.