Probably Niton Geneva

Probably Niton Geneva, No 49309 and No 49310, made for the French Market, for E. Dreyfous "To Their Majesties", 1930's. Very fine, unusual and very rare, flat, double-face and double movement, 18K yellow gold gentleman's wristwatch with 18K pink gold deployant clasp. massive, polished, wide bezel, mobile central lugs bearing a special system of attachments hooded between the two bodies of the cases, sapphire-set winding-crowns. "guilloche" silver with painted Breguet numerals on a plain reserve on one side, on the other side, with painted radial Roman numerals + auxiliary seconds dials on the nines. "Spade" blued steel hands.