[Workshop Bench Report] OMEGA Speedmaster Date Overhaul Overview

Analyzing the global price trends and liquidity of the 3513.50. Discover why Mint & Serviced condition from Japan offers the best ROI for collectors.

We are pleased to share the technical diagnostic log for the legendary OMEGA Speedmaster Date 39mm automatic chronograph reference 3513.50.00. Sourcing uninspected mechanical chronographs from unverified private sellers represents a major financial risk due to hidden wheel wear. Our facility counteracts this by putting every single piece through rigorous watchmaker overhaul procedures. In July 2026, this unit completed an extensive internal caliber rejuvenation along with high-grade external micro-polishing treatments.

Timegrapher Accuracy Metrics and Part Replacements

The calibrated mechanical movement achieved excellent technical performance metrics on our master timegrapher diagnostics station. The balance wheel displayed a massive amplitude score of 294 degrees, an outstanding precision rate of plus three seconds per day, and a perfect beat error of zero point zero milliseconds. During this premium overhaul, our master watchmakers replaced the core mainspring power cell and caseback plastic gaskets to prevent future moisture intrusion. The crystal sapphire face remains completely clear, immaculate, and scratch-free.

Physical Examination and Box Integrity Notes

The premium stainless steel case and matching multi-link bracelet showcase minor surface micro-marks and tiny dents from historical use, maintaining an authentic Grade B rating. Please note that the included original red OMEGA inner box exhibits standard material flaking and degradation, which is a natural chemical trait of boxes from this vintage era. The kit includes the original outer carton, guidebook, serial-matched tag, warranty card, and two spare links matching up to 20.3cm wrists.

Authenticity Guaranteed. Every luxury component has been fully certified by our workshop specialists.