From IWC (International Watch Co. Schaffhausen), one of the apex manufacturers of Swiss haute horlogerie, this is a rare vintage classic produced in the late 1950s to early 1960s, powered by the revolutionary Pellaton winding system. Featuring an authentic cream-toned dial with embossed pearl minute markers, applied gold baton indices, and the legendary in-house Caliber 853 automatic movement, it stands as a timeless dress watch classic holding exceptional collectible value. ​Technical Specifications ​Brand / Model: International Watch Co. Schaffhausen (IWC) Automatic Vintage ​Movement: Powered by an original Swiss-made, in-house IWC Caliber 853 automatic movement equipped with Albert Pellaton's celebrated bi-directional pawl-winding mechanism. The movement bridge bears the engravings "C. 853 - PAT. APPL." and serial number 1536081, while the rotor proudly features the gilt "INTERNATIONAL WATCH Co SWISS" hallmark, as shown in full detail in image ​Case Dimensions: Approximately 37 mm including the winding crown (approximately 34.5 - 35 mm excluding the crown / vertical lug-to-lug stance approximately 42 mm). Thanks to its long, elegantly contoured lug architecture, it offers a noble, balanced, and comfortable presence on the wrist . The side profile thickness can be inspected in images ​Case & Crown Structure: Gold-plated upper case paired with a solid stainless steel caseback. It retains a knurled gold-toned winding crown Due to its age and daily wear, hairline scratches, areas of plating wear, and period-appropriate impact/ding marks are present on the case ​Caseback: Original stainless steel snap-on caseback. The outer surface bears the case serial number 1543264 . The inner caseback clearly displays the inscriptions "STAINLESS STEEL BACK - INTERNATIONAL WATCH Co - SWISS", the celebrated Probus IWC Scafusia crest, and the serial number 1543264 ​Dial and Hands: An original dial with natural cream/ivory patina that has aged honestly over the decades to develop rich vintage character The dial features elegant script lettering for "International Watch Co. SCHAFFHAUSEN" and "AUTOMATIC", applied gold indices, matching gold hands, and an embossed pearl minute track along the outer perimeter. Age-appropriate homogeneous patina and minor spotting are present on the dial surface. ​Condition & Accessories Details ​Operational Status: The high-grade IWC Caliber 853 Pellaton movement good ​Strap & Buckle: Fitted with a high-quality black leather strap featuring a crocodile grain pattern, paired with a gold-toned buckle to harmonize with the warm gold tones of the case Please note that the strap and buckle are non-original (aftermarket). ​Please Note: IWC's Caliber 85x series movements featuring the Pellaton mechanism are widely regarded as some of the finest mechanical achievements in vintage horology. Details such as age-appropriate wear marks, plating wear/dings on the case, natural dial patina, and the aftermarket strap Due to its vintage/antique nature, no water resistance warranty is provided. For cross-border or international shipments, any potential customs duties, taxes, or additional clearance fees are entirely the responsibility of the buyer. Please review all macro photos carefully before finalizing your purchase.