Rolex, Oyster Perpetual, Submariner, 660 ft = 200 m, case 8 million, Ref. 5513. Circa 1980s. Fine, center seconds, self-winding, water-resistant, stainless steel diver's wristwatch with a stainless steel Rolex Oyster bracelet.
Case: Three-body, polished and brushed, screw-down case back and crown, graduated bi-directional revolving black bezel for the decompression times, loss of pearl, Triplock winding- crown protected by the crown guard.
Dial: Black with luminous round, triangular and baton indexes, outer minute division. Luminous steel skeleton hands. Beautiful evenly patinated hands and markers.
Movement: Cal. 1520, rhodium-plated, 26 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, hack mechanism.
Serial: 8 Million End, Link: 580, Bracelet: 93150
Diameter: 40mm Thickness: 13mm
More about Rolex:
Rolex was not the first to create the automatic movement when it introduced the Rolex Oyster perpetual in 1933. Rolex created the auto-rotor movement from patents acquired when they purchased the Aegler movement found in Hunter watches that featured a “perpetual motion” winding mass. Rolex patented its first successful perpetually self-winding wristwatch in 1932 and introduced the 33mm "Bubbleback" one year later. The watch received this nickname because of the large protruding caseback which houses the thick automatic rotor.
In the late 1940's, Rolex introduced larger bubblebacks, the early datejust with a diameter of 36mm. They received the nickname of big bubblebacks and latter the italian nickname of "Ovettone" (a little egg from the italian word uovo). Scholars consider only 4 references to be true "ovettone". they are references 4467, 6031, 6074, and 6075. All of these watches are very early datejust fitted with "roulette" (even days are red and odd days are black) date wheels.
This example of a reference 6075 is impressive by its condition, a super thick mint case, deep hallmark on the caseback, original super Oyster crown, wonderful cream color dial, original all red date wheel, this one owner watch is one of the nicest example we have ever seen.