I doubt this bar has any radium in it. At the time, the word 'radium' was used in the same way marketers today will sling around 'platinum card' or 'gold club' or 'nanotechnology' .

Radium cost a pretty penny back then and that chocolate bar would have cost a fortune even at a minute dosage.

This camera creates medium format stereo pairs. If you think film is lame or film is dead then you just reveal your cluelessness about photography. If film was dead, why would Kodak and Fuji still be doing R&D and issuing new, improved products.

Clearly, you have never seen a medium format stereo pair. They are stunning. Mind blowingly awesome. The images this camera creates are like actually being there. No other 3D image display technology can beat medium format stereo slides.

If you think 3D is anaglyphs or cross-eyed viewing of an image on an LCD monitor, then I'm sorry for your ignorance.

If you are willing to invest some time, you can get similar images using this, less expensive camera:
http://rafcamera.com/stereo/sputnik.htm

If you are willing to learn to do some chemistry, you can develop the slides yourself (it is not as hard as people might tell you) for about $2 a roll.

Have fun!