Returned the ring today! Dan came out to his brothers to pick up his ring. He said he had hoped someone would call some day, but that he never expected it to be his brother!
He said he lost it playing frisbee about two months after he got it. He had even had someone look for it out there with a metal detector.

So it has been laying in the ground for 36 years! I'm glad the other detectorists that go there must disc out all those "junk" signals.
He insisted I accept a reward for returning it, so I now have a nice new gift card to go to dinner.

And, of course, the great feeling of doing the right thing!
Happy Easter!