Antique Early 1900s Gold Filled Side hinged bracelet

An absolute stunner, this side hinged cuff bracelet by S.O.Bigney &Co dates to the early 1900s, patented in 1907 registered in the US, it is made out of yellow gold filled metal in art nouveau style, very sturdy and durable, the look of real, it has a gold metal personalized plaque with a letter D initial, about 1 cm wide, 18.5-19 cm long, the mechanism works perfectly and holds securely, please note the size of wear/aging expected in antique jewelry, as seen in the photos, untreated, comes from a non-smoking environment, a rare estate find!