1983 Seiko 7A28-7039 Quartz Chronograph “Synchro Timer” (Export)

1983 Seiko 7A28-7039 Quartz Chronograph “Synchro Timer” (Export)


Though we typically only offer vintage mechanical watches, it’s hard to ignore the allure of a quartz watch that started a revolution. At a time when quartz meant LCD displays and designs so far removed from tradition that they were hardly recognizable as wrist watches, Seiko took a step backwards in order to bring watch design forward. The 7A28 was the worlds first analog quartz chronograph, and to say they got it right is an understatement. The 7A28 is a 15 jewel movement devoid of a single piece of plastic. It can be regulated to dial in performance, and was built in a way that allowed for the replacement of worn components. The same can’t be said for most of the quartz movements seen even today. The design allows for three sub registers: one measuring minutes, another is the designated seconds, and lastly a tenth of a second totaler. The center seconds is stationary unless the chronograph is engaged, at which point it measures elapsed seconds for the chronograph. If you are unfamiliar with this movement, we can all but bet that a little research will have you ready to track down your own. In the last couple of years, collectibility for these 7A models has begun to skyrocket, and it’s easy to see why. This example from February of ‘83 is the export version of the “Synchro Timer,” denoted by the 9 at the end of the model number instead of a B. The dial is a matte black “reverse panda” layout with recessed registers in satin silver. It’s framed by a steeply angled “count up” chapter that flows seamlessly into the bezel. The insert is glossy black with a tachymetric scale in silver and yellow, and has only light signs of wear. The crystal has been replaced with a mineral copy of the original. The crown sits on the lower left, and is balanced at each corner by pushers that perform the various chronograph functions. The case is unpolished and shows only moderate wear. The bracelet had been lost to time, but I’ve replaced it with a period correct Seiko variant of a similar design with a proper Seiko “SQ” clasp. Post service and a fresh cell, it’s keeping flawless time, and all functions operate correctly. With nice examples being snatched up at record pace, don’t miss your opportunity to add a great 7A28 to your own roster.

Seiko “Ladder” Link Bracelet with “SQ” Clasp in Stainless Steel.

(Though not original to this watch, it is a period correct Seiko Bracelet with the correct “SQ” clasp)

Serviced 4/21/19

Diameter 40.5mm

Lugs 20mm

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