From the ever-lovin blue-eyed (and newly revamped, so worth a return visit if you haven't popped by in a while) lileks.com -- the Radiumscope.
Quote: IT GLOWS WITH A WEIRD LIGHT IN A DARK ROOM.
Quote: The Radium in the RADIUMSCOPE, if preserved, will outlive you and many succeeding generations.
Not-quote: Stick it right up next to your eye! Hold it there! Hours of fun!
"if preserved"? How do you not preserve radium?
How many of these do you suppose were sold?