Hamm's 4 Sided Rotating Motion Cube Clock

Hamm's 4 Sided Rotating Motion Cube Clock that I just finished rebuilding. Luckily the plastics where not broken or cracked, but they were yellow almost brown from cig smoke. The clock motor and gear drive was taken apart by the previous owner, took me a few tries to get it working again. Was able to get the pieces very close to the original white by breaking down the tar with multiple baths in diluted CLR and then using a fine 3M polish.