[Thanks to Bert]Way kewl lens. 40mm F:0.33.
Too bad it doesn't work, it was only made as a PR stunt, making fun of the trend in the sixties for ridiculously fast lenses which were soft when used wide open, you might say it was the "megapixel race of the day". There's always something.
But at least it'd be something to frighten the children with, it looks like it might suck your brains out of your head!
Funny enough, despite it not working, it was sold at auction for 60,000 Euros!