Rolex brand Model (Watch) Day-Date 36 Reference number 1803 Automatic winding Case Material Yellow gold Strap material Yellow gold Year of manufacture 1977 Condition Used (Excellent) The item shows slight signs of wear, such as light scratches, but not perceptible to the touch. Kit Without box and papers, in-house laboratory overhaul in 2025 Automatic winding Case Case Material Yellow gold Diameter 36 mm Waterproof 10 ATM Bezel material Yellow gold Glass Plexi glass Strap Strap material Yellow gold Strap colour Gold Clasp material Yellow gold