Victorian solitaire button with detachable shank, which joins with a spring mechanism. The top is a porcelain (or enamel?) disc with flowers on white, inside an impressed scrolly border highlighted with gold lustre, surrounded by a turquoise rim. Brass back and detachable brass stud type shank. Backstamped: REGISTERED NOV 21 1877, with the registration number 5970. Ver pretty

Size 3/4” (1.8 cm)