Swiss Watch International Limited Edition 001/500 Sapphire Crystal Automatic Watch 7750 Skeleton, Open Mechanism, Tachymeter. Works Great, Watch No. 1 of a Limited Series of 500. 20ATM, Swiss Made. Rare, Unique Piece. Chronograph A9258. Free Shipping. What you see is what you get, no returns accepted. https://youtu.be/-0KXQjPR_qw?si=ysq06h2Nmd6HOsrH