Antique Georgian Gold Enamel Diamond Watch Ring

Antique Georgian period 18k yellow gold watch ring. Featuring blue enamel with rose cut diamonds, porcelain dial with Arabic numerals. Ring size 6, case/top is 18mm in diameter. Watch has a manual wind movement in working order. Weight of the piece - 11.5 grams. Marked on the case back - Brevt, 25263.