Swiss 18K gold, enamel and diamond-set watch Circa 1910

Gold, enamel and diamond-set art nouveau watch with brooch 
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A Swiss yellow gold, enamel and diamond-set art nouveau open-faced keyless lever pendant watch with brooch and additional chain loop attachment, circa 1910. gilt jeweled lever movement, bimetallic balance.
White enamel dial, Roman numerals and outer Arabic five minute divisions, case with floral decoration in high relief interspersed with vari-coloured matte blue enamel decoration, diamond-set stylized initials to one side, with a matching gold and enamel and diamond set brooch and chain loop attachment, with an associated and later gold chain, case numbered.
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Diameter: 25 mm
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Signed: No name