This is a rare overseas 900 Global bowling ball that is USBC approved for league play. 

Coverstock : Reserve Blend 901 Pearl Reactive
Weight Block : Identity™ Asymmetric
Finish : 1500 Grit Polish
Color : Sky Blue Pearl
RG:  2.48 (15 lbs)
Diff: .054 (15 lbs)
Mass Bias:  .024 (15 lbs)