This is a set of official Red Stag by Jim Beam "Baseball Dimple" Rocks Glasses. 

Core Update & Specifics

• The Baseball Bottom: The heavy glass base features an integrated, three-dimensional molded baseball shape complete with raised stitch seams rising into the bottom of the bowl. This creates a "floating baseball" optical illusion when whiskey or cocktails are poured over it. 

• Capacity: 12 oz / 350 ml lowball tumbler (measuring 3.75 inches tall by 3.5 inches in diameter). 

• Market Rarity: This specific sport-themed variant was a limited promotional release from the early 2010s, making it highly targeted by collectors of both sports memorabilia and distilleries. 

Weight: 3.092 lbs., does not include packaging