An impressive French diamond strap bangle

An impressive French diamond strap bangle, c.1930's, the hinged bangle is pavé-set overall with circular-cut diamonds with two raised diamond-set bars, with detachable clip section set with circular-cut and baguette-shaped diamonds and two larger circular-cut diamonds in geometric design, set in platinum, French control mark, scratch inventory number 23481, principal diamonds approximately 1.10 and 1.15cts each, one diamond missing, 5.8cm diameter