This is the movement, dial, hands, and winding stem of the Gerald Genta Octo Bi-Retro OBR.Y.50.510.CN.BD, from when the brand transitioned to BVLGARI. I believe the hands are 18k gold. The movement is in working order and keeps time accurately. It's in very beautiful condition. The third photo shows the watch that housed this movement. The fourth photo includes two sapphire crystals and gaskets that were originally on this watch. They are almost unused, so the glass is scratch-free and in excellent condition! This is a jumping hour Octo series, the same as the current BVLGARI models. It's a very rare item.