セイコー インパクト8T23-8020 SEIKO SBAD003 Impact hand wind quartz
[w1331] SEIKO SBAD003 8T23-8020 Quartz Hand winding Day date LED lights up EX/FR,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,World's first hand wound quartz - Seiko 8T23 — Plus9Time,Seiko] Seiko 8T23 - A Truly Bad, Truly Rare Hand-Wound Quartz Watch : r/Watches,FS - Rare SEIKO 8T23-8020. The 1st hand wound quartz from 1986. | Omega Watch Forums,