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Hello world. This is my bio. Actually, there are two of us, Henry (father) and Mark (son). We have been on eBay as coin sellers for some time, and we have interests in photography and collectibles. About Henry: I am a college professor in physics and mathematics, and have written extensively. About Mark: Mark is a recent college graduate with a degree in Film, hoping to work on movie sets. Our writing lenses started out fast because we had Internet articles already written on Ezine, which we had rights to use since they were our work. We now must actually write new material for our lenses. Our lenses are about collectibles, especially coins, Zazzle, and math and science. Occasionally we make one on another interest, like vintage cars. Our Amazon store for coins.