This Art Deco diamond necklace with an antique 'Swan' Swiss watch pendant made by 'Waltham' Co.and a supporting platinum chain is crafted in lavish platinum, weighs 17.6g and measures 20 inches long, the exquisite watch pendant measuring 40mm long and 20mm wide. Quintessentially Art Deco by virtue of its geometrically themed, openwork profiles and color contrasting juxtaposition of precious stones, this distinctive ladies' antique watch pendant is designed as a simulating Portuguese guitar. Resplendent in 0.81cts of old mine and single-cut diamonds graded H color and SI clarity range and 0.50cts of French square-cut sapphires graded 'navy blue' color and 'good' clarity, this alluring Art Deco watch pendant features a matted-silver dial of stylized ovular-rectangular format with applied black Arabic numerals and black arrow-headed hands, stamped with the name 'Swan'in applied black letters. This authentic Art Deco watch bears a 17-jewel ruby, 'unadjusted' mechanical movement with mono-metallic compensation balance, made by and signed 'Waltham Watch Co.' The stylized bezel is surrounded by meticulously engraved flora motif profiles while the reverse of the guitar-shaped pendant depicts diamond-encrusted lozenge, triangular, trapezoid and rectangular openwork profiles, intersected by two parallel rows of channel-set French square-cut sapphires, enhancing the ornate aesthetic of the pendant. The supporting platinum chain incorporates interlocking ovular links and is enriched with 0.21cts of single-cut diamonds graded H color and VS clarity range, mounted at equal intervals, and secures with a delicate hook, allowing length adjustment. This captivating Art Deco watch is presently in perfect working condition.

The Waltham Watch Company was established in 1850 in Massachusetts with the aim of 'creating the American system of watch manufacturing'. Changing its name to 'American Horologe Co.' two years later, the new company produced its first watches in 1852. After undergoing several changes of ownership and name, the new 'American Waltham Watch Company' founded in 1857 concentrated on manufacturing watch movements and became the main supplier of Railroad Chronometers within and outside the United States. The manufacture of Waltham watch parts was moved to Switzerland one century later, in 1957, adopting the name 'Waltham International SA'. The latter now produces Swiss-made luxury Waltham watches as a full fledged member of the 'Federation of the Swiss Industry.

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