Grand Seiko 6156-8010

Grand Seiko 6156-8010 “Special”

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Grand Seiko 6156-8010 “Special”

From 1970, the 6155 (date) and 6156 (day-date) “Specials” were regulated to +/- 3 seconds per day, whereas the “Grand Seiko standard” was -3/+5 seconds per day. Only the VFA’s were more accurate at timekeeping than the Specials.

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