Cravat, of course, also played the thing on the airliner wing in the Twilight Zone episode, "Nightmare at 20,000 Feet." According to the IMDb, he also appeared, oddly enough, as himself in an episode of WILD, WILD WEST.
I understand he usually played mutes in the movies he made with life-long friend Lancaster because he had a very thick Noo Yawk accent. Lancaster was in a serious decline in health that would soon lead to his death when Nick died; Lancaster's family kept this a secret from Burt. I wish THE FLAME AND THE ARROW was available on DVD; it's as much fun as THE CRIMSON PIRATE.
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