Rolex Oyster Perpetual 3940

Last updated: July 21, 2025
A vintage silver Rolex Oyster Perpetual wristwatch, reference 3940, featuring a white dial and classic metal bracelet.

Brand: 

Rolex

Model Line:

Oyster Perpetual

Production Period:

1933-1955

Caliber/s:

Rolex 630

Case Width:

32mm

Case Height:

39mm

Lug Width:

17mm

Rolex Oyster Perpetual 3940 Description

The reference number “3940” is not a vintage rolex “Bubbleback” model. The nickname “Bubbleback” comes from the distinct, domed case back, engineered to house the automatic rotor. These watches were offered in vast variations of materials and dials (including the “California” dial), making them highly prized by collectors for their historical importance and charming vintage aesthetic.

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