Swiss stainless steel tonneau shaped Rolex watch Circa 1930

Stainless steel lever with visible movement
–
A fine and unusual Swiss, tonneau shaped Rolex movement and hands, encased in a stainless steel display case, circa 1930. Stainless steel display case. Blued steel epee hands, subsidiary seconds hand. A rhodium-plated movement, patented, size: H.W.,
17 jewels, straight-line lever escapement, monometallic Super balance adjusted to two positions, blued steel Breguet balance spring and an index regulator. Case and movement signed.
–
Thickness: 11 mm
–
Diameter: 42 mm
–
Signed: Rolex  Swiss