Morning Becomes Entertainment - S7-E19
Continuity mistake: In the initial scene where Frasier is talking to Daphne and Roz in Cafe Nervosa, Frasier can be seen wearing a wedding ring in certain shots. (00:01:10)
Morning Becomes Entertainment - S7-E19
Continuity mistake: In the same scene where the positions of the pink cards change, the box of kleenex also changes position.

Morning Becomes Entertainment - S7-E19
Continuity mistake: On Frasier and Bebe's first show, the pink card with Frasier's notes moves back and forth, behind the bowl on the table, between shots.
Morning Becomes Entertainment - S7-E19
Continuity mistake: At the beginning of the show, Frasier and Daphne are talking in Cafe Nervosa and behind them there is an extra at the counter. In some shots he is sitting there doing nothing, and in others he is eating a muffin.
Morning Becomes Entertainment - S7-E19
Continuity mistake: Bebe places her purse behind the couch when she sits down to start the show. It appears and disappears throughout her scene with Frasier.
Answer: It equals the record of James Arness of "Gunsmoke" for the actor who's played the same part on TV NOT in a soap opera. If you include soaps there are two main contenders - William Roache, who's been playing Ken Barlow in "Coronation Street" in the UK since 1960. Don Hastings has been playing Robert Hughes in US soap "As the World Turns" since 1960 as well.