I had one in the mid 70's which had a glass bedded bbl. It had target sights similar to those that were common on the Anschutz 22lr. I wasn't using it and I sold it through a third party, at his suggestion, who never paid me in full....got stung for about $125.00. I think he had a problem with the ponies.
When I think of it today, as my interests have drifted back to shooting, I feel like sh*t. Never again, unless I have all the money in hand. But I was young and stupid. Today, I'm just stupid.