PRINCE Diamonds & Pearls - Calendar Cube (Unusual 1991 Warner Japan promotional only 6-month calendar cube. Given away originally only to stores and reps, this cube is unused and still as new - flat packed and ready to assemble when it will measure approx a 5"x5"x5" cube.... Prince's birthday is denoted on the 7th June - happy birthday to him. These calendar cubes were issued for various Warner Music artists in Japan but this is the only one we have obtained for Prince - an unusual and entirely genuine memorabilia find)