Swiss 18 carat yellow gold keyless dress watch Circa 1925

\Gold open faced lever by Rolex
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A fine and rare Swiss, thin, keyless, 18K yellow gold dress watch, circa 1925. The case with Glasgow import marks for 1925-1926. A solid, polished case. Engine-turned matte silver dial with painted radial Roman numerals, outer minute track, subsidiary seconds dial. Black halberd hands. A rhodium-plated movement, 15 jewels, straight-line lever escapement, cut bimetallic compensation balance timed three positions for all climates, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 44 mm
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Signed: Rolex  Genève
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The dial is slightly oxidized.