Brand Audemars Piguet Model (Watch) Royal Oak Selfwinding Reference number 15400ST Automatic winding Case Material Steel Strap material Steel Condition Used (Excellent) The item shows slight signs of wear, such as light scratches, but not perceptible to the touch. Kit With original box, original papers Case Material Steel Diameter 41 mm Waterproof 5 ATM Bezel Material Steel Glass Sapphire crystal Black dial Numerals on the dial Without numerals Strap Strap material Steel Strap colour Steel Clasp Double folding clasp Clasp material Steel Functions Data AUCTION COMMISSION 25%