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