Thanks for all the compliments on the jukebox. It was explained to me that they used the C, the one I have in the opening and the G was the one in Arnolds. So I guess they would say both are Happy Days model as a selling point I'm sure.
The Happy Days Model is known as the C from the Opening Credits. The record playing is "Happy Days", by "Pratt & McClain. The other side B is Crusin with the Fonz.