World's first hand wound quartz - Seiko 8T23 — Plus9Time
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World's first hand wound quartz - Seiko 8T23 — Plus9Time,w1331] SEIKO SBAD003 8T23-8020 Quartz Hand winding Day date LED lights up EX/FR | eBay,Seiko] Seiko 8T23 - A Truly Bad, Truly Rare Hand-Wound Quartz Watch : r/Watches,w1331] SEIKO SBAD003 8T23-8020 Quartz Hand winding Day date LED lights up EX/FR | eBay,1986 Seiko ref. SBAD003 (8T23-8020) The world's first manual winding quartz movement was Seiko's Cal. 8T32, released by Seiko in the late 1980s. The wearer would be able to wind the crown