This monogram is part of the Cyrillic alphabet from Moscow 1902 featured in the book Monogramy, A. Litke. 

Monogram: TB

Accents/Accessories: Pavé diamond bail with gold clasp; Raised outline border; Raised monogram; Smooth, mirrored background;  Three 24k gold orbs salvaged from parts of United States Air Force Military jets that were flown over Iraq and Afghanistan

Size: 78 x 44 millimeters (3.07 x 1.73 inches)

Weight: 34.70 grams (1.22 ounces)