Brand: Rolex Model Name: Sea Dweller 'Great White' Reference: 1665 Complication: Date Movement: Automatic Year: Circa 1976 Dial shape: Circular Dial colour: Black Dial features: Cream patina hour markers, service mercedes hands Bezel: Bi-directional divers bezel Case size: 40mm Case material: Stainless steel Case features: Helium escape valve, Rolex screw down crown. Service case middle by Rolex Case back: Screw down Inner case back: Original case back with the original 4.1 million serial number engraved, Rolex service engravings Movement cal: Rolex calibre 1570 Movement jewel: 26 Bracelet or strap: Rolex 93150 Oyster service bracelet, divers extension, St9 clasp code Bracelet material: Stainless Steel Auctioneer's notes: This is a great value 1665 for collectors looking to buy into the first reference Sea Dweller! Although not all original parts, it is a wearable example of a vintage dive watch. Condition report: Currently running in excellent condition overall. This example had the case middle replaced during a Rolex service, meaning the serial number differs to the original (as found on the inner case back). Case is a 4.7 million serial number, case back 4.1 million.