Paul,
Although I've often been tempted, I've never mounted them on a rifle for fear of damaging that large front lens.
My unissued set came in an obviously old, little box that I've always wondered about. Without asking you to dig yours out, can you remember perhaps, is it made from thin brown cardboard that has been covered with a layer of baby blue paper glued to the outside faces of the box, with "LATTEY LENS SIGHTS" typed on a piece of paper glued to one end?
The box certainly appears old enough to be original, but, I don't know if it actually is, or, if it is just a handy size box someone found years ago to keep it in.
Thanks,
Terry