Omega "Jumbo" Oversize 38mm - Ref. 2505-6 - Cal. 265 - Year 1948 - Original Buckle & Crown General Description: Up for auction is a rare piece of horological history: an authentic Omega "Jumbo" (Oversize), reference 2505-6. Produced in 1948, this model was revolutionary for its era due to its impressive 38 mm diameter, maintaining a modern and extremely elegant wrist presence today. Technical Details (Verified): Movement: Legendary in-house Omega Caliber 265, manual wind. Serial Number: 11.608.953, dating the watch exactly to 1948. Movement Condition: Working perfectly. Features the original, clean "rose gold" finish (see photos). Case: Stainless Steel (Acier Inoxydable), 38 mm diameter (excluding crown). Dial: Minimalist design with Roman numerals and sub-second dial at 6 o'clock. Displays a beautiful natural patina. Originality: Crown: Original, Omega signed. Buckle: Original Omega. Strap: High-quality aftermarket leather strap (Kaufmann Handmade - Strauss Chrono). Condition Report (Transparency): Front/Dial: Visually in very good condition, offering a noble vintage aesthetic. Caseback: Shows visible signs of wear, pitting, and scratches, consistent with its 75+ years of age. These are clearly documented in the photos for total transparency. The interior of the caseback is pristine, with all original Omega stampings. Performance: The watch has been checked and is running perfectly. Final Note: The images are an integral part of the description. As this is a vintage collectible from 1948, no guarantee is offered for water resistance.