Paul Michael Glaser Houdini

I am reading a book about magicians back in the early part of the 20th century and was reminded of a made for TV movie The Great Houndinis starring Paul Michael Glaser. It had a scene of him in chains which he did nude to show that he had nothing up his sleeve ( or anywhere else) I remember it being quite revealing for 1976.

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RE:Paul Michael Glaser Houdini

Was he nude or wearing a very brief swimsuit?
I thought it was the latter.

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