Seiko GS 4520-8000 CIRCA 1968
1968 · Automatic · 37mm
$3,000 — offers
1 listing for Grand Seiko on Tokyo Time, listed direct by their owners, from 1960s.
Seiko's high-end division, independent as its own brand since 2017. Known for hand-finished cases, textured dials and the Spring Drive movement, which is neither purely mechanical nor purely quartz.
1 watch listed
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There are not enough Grand Seiko listings on Tokyo Time right now to give a range without it being misleading. This answer fills in as listings are added.
Tokyo Time is a classifieds site: it introduces buyers and sellers and takes no part in the transaction, holds no money and offers no buyer protection. Ask for photographs of the movement, the caseback and the serial number, meet in person where you can, and treat a price well under the going rate as a reason to ask more questions.
Redials, replaced hands and swapped bezel inserts are common and are not always disclosed. Ask whether the dial is original, when it was last serviced, and whether the case has been polished — a polished case is not a fault, but it changes what the watch is worth.