Seiko - Chronos Textured Waffle Dial Cushion Tank Tsunami - 5H23-5110

This exceptionally sharp vintage sports-dress instrument is an authentic JDM artifact from July 1989, as definitively verified by the serial number 975108 stamped across the stainless steel caseback alongside the revered relief Seiko Tsunami Wave medallion and Daini Seikosha lightning insignia. Positioned within Seiko’s celebrated Chronos lineup, this reference blends formal Japanese executive tank styling with robust sports-grade specifications, featuring factory 10-bar water resistance and 60-gauss antimagnetic shielding designed for enduring resilience. It houses the reliable Seiko Caliber 5H23 quartz movement, an over-engineered technical engine renowned for its high-torque stepping motor, set-and-forget timekeeping accuracy, and quickset bilingual Kanji/English day-date calendar complication. 

The case architecture presents a solid stainless steel cushion-shaped tank chassis defined by brushed vertical hood surfaces, polished bevels, and an integrated knurled crown guarded at 3 o'clock. The dial is a mesmerizing visual centerpiece, showcasing a finely textured white micro-waffle grid pattern that reflects light with multi-dimensional depth. It is appointed with applied black-accented baton hour markers, matching needle hands for crisp contrast, a perimeter minute track, and a metallic framed quickset day-date aperture. Completed on its original, period-correct factory Seiko-signed stainless steel multi-link jubilee bracelet with signed folding clasp and correct GA39B-E end-links, this late-1980s classic delivers cohesive, commanding wrist presence.