Bubble-Back Rolex, 'Oyster Perpetual, Chronometre', case No.46972. Made in 1946. Fine and rare, self-winding, water-resistant, tonneau-shaped, 9K yellow gold wristwatch. | Important Collectors' Wristwatches, Pocket Watches, Clocks & Horological ...
Rob's Rolex Chronicle : Rolex Patents the Oyster Perpetual in 1931
Rolex 'Oyster Perpetual' wristwatch, 1931. by Richardson, Claire at Science and Society Picture Library
A Closer Look At the Rolex Oyster Perpetual - Everest Horology Products