I believe this is the standard model. It has fixed sights. I looked up the serial number. Manufactured in 1964. Has a tiny amount of wear on it, but the mag springs are pretty stiff. Like they've hardly been used. I've never owned one of these or shot one. I was surprised how easy it was to shoot well with it.
Yeah, the other guy probably thought he was getting a good deal. He was getting a new "modern" gun and I was getting this 50ish year old gun that was good for taking the kids shooting. But he approached me with the trade offer and I had always wanted one of these, so I accepted.