I have via my grandfather a boxed set of stereograms, about 500 or so, sold at the end of the Great War. So far so good. Unfortunately over the years the actual stereogram kit has got mislaid. They consisted of a handle, a pair of lenses, and a holder like a trumpet player's music holder, mounted on a rail so it could be moved nearer or farther away for focus. The photos are mounted on cardboard measuring 3 1/2" X 7". Is such kit still around? Is it silly money? Any ideas would be gratefully received.