Rubik's Mühle Cube
RUBIK'S MÜHLE. Standard cube with solid plastic facelets having holes in them for pegs. Clip-on box for pegs. Made in Korea and sold as two-person game by ITC 1982. German edition.
Sold as Rubik's Challenge in UK, Le Jeu Rubik's Spécial in France and Rubik's Game in USA.