Inaugural commercial model ; Vintage (1985) INTERPLAK PB-1 Electric Tooth Brush by Dental Research Corp.

A relative worked for Dental Research on the development team. She sent this to my children around 1985

Was last used ~30 years ago; recently attempted to recharge battery - unsuccessful. Unknown if batteries are dead or if they can be replaced. Assume more interest as a historical model of electric toothbrush versus actual use. No guarantee of functionality.

Counter-rotating bristles.

All packaging; literature and accessories in box.

See Photos.