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This isn't just an "open heart" that shows the balance wheel
unadorned caseback—a signature of this reference—which protects the technical soul within
14mm BETWEEN LUGS 19mm SERVICE Serviced (Assumed for vintage resale) STRAP Rubber Strap Original
following larger industry trends towards sophisticated and long-lasting materials
Seiko - Quartz QR - 3862-7020 JDM This isn't just an "openThis timepiece is a magnificent artifact from September 1973, as confirmed by the serial number 391911. The QR series is defined by its substantial, architectural case design and a breathtaking silvery sunray dial that features the iconic QR "honeycomb" or "T pattern" logo at 6 o'clock, a mark of superior electronic calibration. It is powered by the legendary Caliber 3862, a high grade early quartz movement engineered with a high torque stepper motor
