A very beautiful, authentic vintage Omega "Jumbo" (Ref. 2640-5 sc) from around 1952. The watch is in fantastic, completely unpolished original condition. The stainless steel case shows no deep scratches, dents, or severe damage, but only very fine, superficial signs of wear (“tiny scratches”) that have developed over the decades and give the watch a magnificent, authentic patina. The case edges are absolutely sharp.Model: Omega Classic / Jumbo "Calatrava"Reference: 2640 - 5 sc (ck 2640)Diameter: Rare 36 mm "Jumbo" version (excluding crown)Movement: Legendary hand-wound Manufacture Caliber 283. The red-gold-plated movement is visually in excellent condition, starts running immediately, and keeps good time. Strap: High-quality brown alligator leather strap by Rhein Fils. An authentic collector’s item from first-hand or private ownership. Note on function: When pulling out the crown to set the time, the second hand initially moves very slightly for a brief moment. After pushing the crown back in, the watch immediately continues to run completely normally and flawlessly. New Hirsch alligator leather strap, fitted in Basel, cost CHF 220. The watch itself is original; the strap is not an Omega original. Shipping is secure and fully insured via Swiss Post (delivery requiring a signature) from Basel. Private sale.