I remember watching this show when I was about 5 years old. The one thing I wanted to mention was the song they used to play when they revealed a "clunk" to the contestant. I remember this song used to freak me out, so after a while, I'd watch the show with the sound completely turned down (it was the 1970's, there were no mute buttons).
Another note is that the show came back on around 1981. In this version, every contestant was a woman, and they had never had any men even attempt to open up the small jack in the box to see if they'd go on to pick 1 of 64 boxes. I recall reading somewhere that they thought women would react better to all those skits they'd pull off after a box was chosen, so they never had a man on this 1980's version of the show. The 1980's version was only on for a season, I believe.
Another note is that the show came back on around 1981. In this version, every contestant was a woman, and they had never had any men even attempt to open up the small jack in the box to see if they'd go on to pick 1 of 64 boxes. I recall reading somewhere that they thought women would react better to all those skits they'd pull off after a box was chosen, so they never had a man on this 1980's version of the show. The 1980's version was only on for a season, I believe.