I sold dozens of those suckers back in the mid-fifties in Sarasota, but they were the kitschy seashell kind for tourists.  There's beautiful examples out there - take a look at Mark Stevens' TV Lamp Site.  And many a meal was eaten on TV Trays, sometimes those early Swanson's TV Dinners, while watching Ed Sullivan, I Love Lucy, Sid Caesar (you recall those too?), and more, by the intimate reflected glow of those little lights.