# Audemars Piguet Classique Ultra-Thin Automatic – Ref. 14682BA – Calibre 2120 – Solid 18K Yellow Gold – Exhibition Caseback – Mint Condition ### **Introduction** A masterclass in horological elegance and micro-engineering. This is not just a dress watch; it is a legendary piece from the holy trinity of Swiss watchmaking, Audemars Piguet. Featuring the iconic **Calibre 2120**, known to connoisseurs as one of the finest and thinnest automatic movements ever created, this Ref. 14682BA combines timeless aesthetics with historical significance. Presented in exceptional, unpolished mint condition, it is a holy grail for discerning collectors. --- ### **The Heart: The Purest Expression of the Legendary Calibre 2120** * **The Pinnacle of Ultra-Thin Purity:** While date-complication versions (Cal. 2121) add extra thickness (3.05mm), this **time-only version (Calibre 2120)** represents the absolute summit of mechanical purism, standing as the world's thinnest full-rotor automatic movement at a mind-blowing **2.45mm**. * **Royal Oak DNA:** This is the exact mechanical royalty and base caliber that powered the first legendary Royal Oak Ref. 5402 in 1972. It is horological history on your wrist. * **Micro-Engineering Marvel:** Features a 21K solid gold oscillating weight segment. The rotor is supported by a unique beryllium bronze ring with four ruby rollers, minimizing friction and allowing an ultra-thin profile without sacrificing stability. * **Flawless, Factory-New Performance:** Fully adjusted to heat, cold, isochronism, and 5 positions. The timegrapher results show an **unbelievable 0s/d deviation with a strong 292° amplitude and 0.0ms beat error**, proving it is running perfectly to factory specifications without requiring any service. --- ### **The Case & Hallmarks (Unpolished Connoisseur Details)** * **Solid 18K Yellow Gold:** The 34mm case retains its razor-sharp factory lines and wears larger than its size due to the slim bezel and elongated lugs. * **Crisp Official Swiss Assay Marks:** The case profile proudly exhibits deep, unpolished official Swiss hallmarks that prove the watch has never been subjected to aggressive polishing: * **"18K 750"** purity stamp. * **"Helvetia" (The Swiss National Symbol) Goddess Head Hallmark**, guaranteeing authentic Swiss gold assaying. * **"CO" Master Responsibility Mark** and the official Cenevre (Geneva) key stamp. * **Original 18K AP Buckle:** Fitted with the rare and original signed 18K solid gold Audemars Piguet buckle (stamped 750 with the AP Co shield). --- ### **Aesthetics & Dial** * **Pure Sophistication:** A flawless, deep white porcelain-finish dial adorned with crisp, black Roman numerals and elegant leaf hands. * **Exhibition Caseback:** Features a factory sapphire crystal caseback, allowing an unobstructed view of the exquisite Côtes de Genève finishing, perlage, and hand-beveled edges of the legendary movement. --- ### **Technical Specifications** * **Brand:** Audemars Piguet * **Model:** Classique Ultra-Thin Automatic * **Reference:** 14682BA * **Serial / Case Number:** D 22501 * **Movement:** Automatic Calibre 2120 (36 Jewels, 19,800 vph) * **Case Material:** Solid 18K Yellow Gold (750) * **Case Diameter:** 34 mm (Excluding crown) * **Dial:** White with Black Roman Numerals * **Strap:** Premium black alligator/leather strap * **Buckle:** Original 18K Solid Gold Audemars Piguet Tang Buckle * **Condition:** Mint / Exceptionally well-preserved --- ### **Condition Report** * **Case:** Mint condition, no major scratches or dings. Hallmarks are deep and crisp, indicating it remains unpolished. * **Dial & Hands:** Pristine, no signs of oxidation or aging. * **Movement:** Running flawlessly (0s/d, 292° amplitude, 0.0ms beat error). --- ### **PREMIUM SHIPPING INFORMATION** This timepiece will be carefully packaged and securely shipped with the utmost attention to detail. For buyers within the European Union, shipping can also be arranged directly from an EU country upon request. This option may involve additional logistical costs. Please contact me after the auction to discuss the available shipping options. **Bid with confidence.**