Rare Vintage PRIM Berusky Blue Dial Mechanical Hand-Winding Watch Caliber 66

For sale is a highly collectible vintage Czechoslovakian mechanical watch PRIM, nicknamed Berusky (Ladybugs) or Bublina (Bubbles) due to its unique dial design. This particular piece features a very rare and highly sought-after vibrant blue dial, which is much less common than the standard red version. The watch is powered by a reliable in-house manual-wind movement, Caliber 66. Despite not having a recent service, the mainspring and balance wheel are fully intact, and the watch is in good working order. Timegrapher testing shows impressive results for an unserviced vintage timepiece, with an amplitude of approximately 230 degrees and a daily rate within just 40 to 60 seconds. A professional cleaning and lubrication will make this caliber run like new. This is an exceptional, authentic addition for any vintage watch enthusiast or serious collector.

Condition
Pre-owned, vintage condition with visible signs of age and wear. The chrome-plated brass case and original spring bars show significant green oxidation (patina) and chrome wear on the lugs, requiring ultrasonic cleaning. The acrylic crystal has scratches but can be polished or replaced. The movement is visually clean, complete, and running surprisingly well. The watch is sold as-is, and a full professional movement service (overhaul) is recommended to ensure optimal timekeeping and longevity.

Specifications
Brand: PRIM Model: Berusky / Bublina Gender: Unisex / Women's / Boys' Case Diameter: 28 mm (without crown) / 30 mm (with crown) Lug-to-Lug Distance: 34 mm Thickness: 10 mm Crystal Diameter: 24 mm Lug Width (Strap Size): 14 mm Movement: Manual-winding Mechanical, Caliber 66 Jewels: 17 Jewels Dial Color: Blue with circle indexes Case Material: Chrome-plated brass Brand Country: Czechoslovakia Movement Country of Origin: Czechoslovakia

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ITEM # 11852