Those were around in the late 80's - early 90's, so its somewhere around 10-14 years old. I don't think I ever saw one on the archery ranges. Most of the Martin shooters around here shot the Firecat or Cougar. At the time, the Onza was just a little to radical, and a little too expensive, for most folks. At least, that's how my memory of the bow runs.

I doubt it's worth any more than any other compound from that time period. Not that many around though and it could be worth something, someday, if collecting vintage antique compounds ever catches on.