This monogram was originally created by AA Turbayne, in his book Monograms & Ciphers, London, England, (1906). 

Monogram: JS

Accents/Accessories: Square shape; Border on top; Detachable pavé diamond bail; Smooth raised monogram

Size: 58 x 46 millimeters (2.28 x 1.81 inches)

Weight: 25.20 grams (0.89 ounces)