I'll bet they'll never learn that the nozzled wrist gauntlet belongs to the right and the smooth wrist gauntlet belongs to the left arm...
But nevertheless, I've found two more series where our chromed friend (or at least his helmet) made a few brief appearances...
The first is in the episode "Incindent in Lot #7" of "Murder, she wrote" (with a rather dull paint finish):
The other two are from the episodes "Halloween Knight" and "Fright Knight" of "Knight Rider", which could hardly be more appropriate (you all know what I mean)... *sweepingredeyecommonalities*
After looking closer to the second screen-cap, I think I should now be able to solve the mystery of the additional "salt-and-pepper" holes of the Vulpa helmet which was sold by PiH. They've evidently drilled more holes over the "eyeborrow"-section of the Vulpa helmet in order to achieve a better sight for the actor John Calvin, who plays the character "Simon" and wears the helmet in this episode for a very short time. Here's a small comparison again:
By the way: I just hope they've got rid of this this silly-looking white eye scanner and put back the original red scanner after filming was completed...