Seiko Seikomatic Chronometer 6245-9000 “Pre-62GS” – First Automatic GS Precursor – For Service
Reference: Seiko Seikomatic Chronometer 6245-9000 (“Pre-62GS”)
Case: Very good, original normal wear, strong case lines, and unpolished
Dial: Very good condition with very little sign of age
Hands/Indices: Excellent
Crystal: Original crystal with a few light marks; NOS original replacement crystal included
Caseback: Great condition with gold lion medallion in very good shape
Movement: Clean, but not running properly → plan for service
Running issue: Runs well dial-up / above ~45°, but slows and stops when turned over
Strap is degraded and should be replaced. Does not appear to be original.
The Seikomatic Chronometer 6245-9000 is one of the most important pre-Grand Seiko automatic Seikos and is widely viewed as the direct predecessor to the 62GS, Grand Seiko’s first automatic line. Multiple vintage sources note that the 62GS effectively started life as the Seikomatic Chronometer 6245/6246-9000, first introduced in the mid-1960s before Seiko transitioned the design into the Grand Seiko family.
This reference uses the caliber 6245A, a 35-jewel automatic movement beating at 19,800 bph, housed in the classic early 62GS-style case with a large dial opening and clean, elegant mid-1960s proportions. That direct connection to the first automatic Grand Seikos is exactly why collectors often refer to these as “Pre-62GS” pieces.
Original case is in very good condition
Unpolished, with strong original lines and very nice overall geometry
Caseback is also in great condition, and the gold lion medallion remains very well preserved
Original crystal has a few light marks as expected, but I am also including a New Old Stock original crystal with the watch
Dial is in very good condition with very little if any sign of age
One of the highlights of the watch
Indices and handset are excellent, clean, and very well preserved
In-house Seiko caliber 6245A automatic movement, 35 jewels, 19,800 bph
Movement is clean, and all functions operate
Important service note: the watch is not running properly
It runs perfectly fine and when angled about roughly 45 degrees
But when turned over, the balance slows and stops, almost as if friction increases in the dial-down position
Because of this behavior, the watch should be considered for service and sold with that understanding
As with all vintage watches, water resistance is not guaranteed
Seiko Seikomatic Chronometer 6245-9000 watch
NOS original replacement crystal
Strap/bracelet as shown in the photos
(No original box or papers unless otherwise stated.)
This is a very attractive and historically important example of the 6245-9000 Pre-62GS, with:
Great unpolished case
Very good dial
Excellent hands and indices
Great caseback and gold lion medallion
Original crystal still fitted, plus a NOS original crystal included
Clean movement that will need service due to its positional stopping issue
The case, dial, hands, crown, movement, crystal, and caseback/medallion are original and correct for this reference, with the additional NOS crystal included separately. I offer a money-back guarantee on authenticity.
Please review all photos carefully as they form part of the description, and feel free to contact me for additional images or a video showing the watch running behavior.