Prisma Art Deco 935 Silver Purse Watch

Prisma Art Deco 935 silver cabriolet purse watch travel clock features a transforming mechanical shutter case in silver with black hot enamel geometric panels. The original silvered dial is signed Prisma and showcases stylized Arabic numerals, luminescent tracking, and original hands for a crisp 1920s–1930s look. Crafted in high-grade continental 935 silver and stamped CFB inside the case for Carl Friedrich Bosch/Charles Frederik Bosch, it references US Patent #1651804 (Dec 6, 1927) for the travel clock case mechanism and bears case serial number 62174. This compact antique timepiece is ideal for a collector’s display in an office, bedroom nightstand vignette, or entryway catchall tray, and it also makes a distinctive gift for an Art Deco design lover. It suits buyers who want an authentic Art Deco mechanical purse watch to restore, display, or add to a vintage horology collection. Nationwide shipping is available for this item. See our return policy and authentication commitment below. AS IS: non-running mechanical movement needing standard horological service (balance wheel or mainspring), with minor period-correct surface tarnish to the silver case; official Classification: Antique Art Deco Mechanical Shutter Travel Purse Watch / "Cabriolet" Clock.Retailer / Brand: Prisma (Signed on dial face).Case Engineering & Fabrication: Carl Friedrich Bosch / Charles Fredérik Bosch (Stamped CFB inside case).Material Composition: 935 High-Grade Continental Silver (Stamped inside case) featuring hand-applied geometric Art Deco black hot enamel panels.Patent Reference: US Patent #1651804 (Granted Dec 6, 1927, to Carl F. Bosch for a transforming "Travel Clock Case" mechanism).Case Serial Number: 62174 (Stamped on inside panel).Aesthetics: Original silvered Art Deco dial featuring stylized geometric Arabic numerals, luminescent tracking, and original hands.Mechanical Status: As-Is / Non-Running. Balance wheel or mainspring requires standard horological service/restoration.Cosmetic Condition: Enamel is highly intact with excellent retention of geometric linework, silver casing shows minor period-correct surface tarnish suitable for its age, as shown in the photos.