[Workshop Bench Report] OMEGA Speedmaster Date Reversing Wheel Service

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

Welcome back to our technical watchmaker summary board. Today we detail a pristine OMEGA Speedmaster Date 39mm chronograph, reference number 3513.50.00. Most pre-owned luxury automatic chronographs on international market portals are listed with unknown service histories and declining balance wheel amplitude scores. Our workshop addresses this issue directly. In July 2026, this unit completed a full mechanical overhaul, complete chemical lubrication cleaning, and detailed premium case polishing.

Watchmaker Bench Metrics and Internal Part Renewal

On our professional timegrapher diagnostic machine, the automatic movement displayed near-flawless operational health indicators. It achieved an exceptional balance wheel amplitude of 296 degrees and a highly accurate daily rate variance of plus one second per day. The beat error registered a near-perfect zero point one milliseconds. To achieve these metrics, our watchmakers fully renewed the internal mainspring assembly, replaced the automatic reversing wheel, and installed fresh caseback plastic seals.

Physical Condition and Kit Specifics

The premium sapphire crystal contains absolutely no surface scratches or scuffs. The solid stainless steel case body and integrated bracelet links exhibit minor hairline scratches and tiny dings from previous gentle use, while the folding clasp shows medium dings. This collectible unit comes complete with the genuine outer box, original red inner presentation box (exhibiting natural material flaking), guidebook, warranty card, and two extra spare links matching wrists up to 20.3cm.

Authenticity Guaranteed. Buy with total peace of mind knowing that this asset has been verified by industry-certified watchsmiths.