This pendant with its Medieval "AR" monogram shines bright. The monogram is by the heraldic artist, Charles Demengeot from his book, Dictionnaire Chiffre-Monogramme (1881) Paris, France. 

Monogram: AR

Twisted detachable bale that opens inward to hold mid-sized chains or necklaces; On 21 inch bar & link chain; Features lion; Raised monogram and detailed background; Oxidization

2.29 x 1.55 inches         31.1 grams