EIP Original Nikola Tesla Positive Energy Purple Plate Small UPC #: 860581000307 ALL EIP PURPLE PLATES & DISKS HAVE THE UPC CODE PRINTED ON THE LITERATURE. DON'T SETTLE FOR FAKES. 2.75" x 4.5" Naturally-Grounding Purple Plate Attracting Paramagnetism Invented by Ralph Bergstresser & manufactured in Arizona Written about by Linda Goodman