Did the Harts live in Bel Air or Beverly Hills ?
"Bel Air. The address used on the show is 3100 Willow Pond Road, Bel Air, CA.
But the house used for exterior shots is actually in Brentwood, CA. It was once owned by June Allyson and Dick Powell who were friends of Aaron Spelling and Robert Wagner.
June guest starred as Elizabeth Tisdale (Max’s pen pal) in S5 E21.
Also, I’m still a bit disappointed that one of the recent owners had the pool filled in with cement.
Why doesn't Jennifer Hart wear her 10 carat diamond ring or even her wedding band in many episodes?
"I think it’s a continuity/props error by whoever was in charge of that. It seems they were relaxed and allowed the actors to wear their own jewelry in many episodes.
R.J. wore his personal jewelry during the television series which looked fine as he was wearing his own wedding band. But sometimes Stefanie would wear a gold band on her ring finger or gold rings on other fingers.