It's a little too long for our poor dialup, but I gather it's What's My Line? I remember a similar show, To Tell the Truth, which had three competing persons all claiming to be the real Joe Blow. The panel would ask questions in turn until some point when they would have to vote on who they thought was the real Joe Blow. The name Password sounds familiar but it seems it was more of a Concentration type game. But no. My memory fails me again. It was a mimeless Charades-type game. It started in 1961 when I was fresh off to college and above such pedestrian pursuit.