Yep, he was famous for this kind of guitars. He had a lot of different models with variations of this design in all the years. I read that the bodys - at least the early ones - were made of bakelite, a kind of plastic.
On Youtube there should be a lot of videos of him.
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https://www.youtube.com/watch?v=2z67soz7nT8&feature=related
On Youtube there should be a lot of videos of him.