I know of many. It was common to use sterile watches in the movies / tv. The props department had the names removed for one reason or another. Here is a cool site specifically on watches in the movies
http://watchesinmovies.info/
One of my favorite scenes showing this was a Rockford files episode with Tom Selek as Lance White had a mechanical alarm watch. Close up clearly showed the name had been angrily wiped off. (Of course, I can't find a screen shot) BTW, Jimbo wore a Heuer Carrera most of the series. Very cool.
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