This monogram was created by British Heraldic Artist, J Gordon Smith from his book Monograms in Three and Four Letters. 

Monogram: MC

Accents/Accessories: Convex shape; Loose bail; Smooth, rounded edging; Raised monogram with oxidization; Shiny finish

Size: 24 x 16 millimeters (0.94 x 0.63 inches)

Weight: 5.10 grams (0.18 ounces)

Sterling Silver Chain as shown: 16 inches - $25.00 or 18 inches - $35.00