Vintage 1959 Buren Grand Prix Super Slender Power Master Automatic – 20µm Gold P For Sale

Up for sale is a beautifully preserved, highly authentic 1959 Buren Grand Prix Super Slender / Power Master Automatic in exceptional vintage condition.Buren holds a legendary place in horological history for pioneering the ultra-thin micro-rotor (planetary rotor) movement. This specific example beautifully captures that era of innovation, presenting a razor-thin profile on the wrist while offering robust automatic winding.Key Features & Collector Highlights:

• Authentic Buren Case: The case retains its sharp lines and original factory hallmarks. It is explicitly stamped \"PLAQUE G 20\" between the lugs, certifying a heavy, premium 20-micron gold plating. This layer is remarkably thick for the late 1950s and has preserved the watch brilliantly, showing minimal vintage wear and no major base-metal bleed-through.
• Factory Stamped Serial: Clear, crisp 933540 reference serial numbers are fully legible between the alternate lugs, guaranteeing case authenticity.
• Stunning Clean Dial: Features a highly sought-after, original gold-colored dial that perfectly matches the tone of the casing. The dial face is remarkably clean for a 60+ year-old timepiece, free of the heavy water spots, heavy patina, or flaking often found on watches from this era.
• Historic Micro-Rotor Automatic Movement: Houses the famous Buren ultra-thin automatic caliber. The dial reads \"Automatic\" proudly, and the movement functions smoothly.

Specifications:

• Brand: Buren
• Model: Grand Prix Super Slender / Power Master
• Year: Circa 1959
• Movement: Automatic (Micro-Rotor / Planetary Rotor)
• Case Material: Heavy 20-Micron Gold Plated (PLAQUE G 20)
• Serial Number: 933540
• Dial Color: Gold (Original, Factory Finish)