1989 Seiko 5Y23A Movement Men's Watch 99cent auction - YouTube
SII NH35 Replacement Movement | Caliber Corner
Anyone know a good replacement movement for a Seiko SQ Day Date 5Y23-8A11? The original movement (5Y23A) is long since discontinued. Thanks! : r/watchrepair
Original Circut Seiko Quartz 5Y23A/5Y22A Seiko 4001-527 Ciurict block NOS | eBay
Seiko 5Y23A Stem Stuck in Date Selection position? - Quartz and Tuning Fork Battery Operated Watches - Watch Repair Talk
The ONLY Seiko Movements You NEED To Know - Differences & Similarities - YouTube
Day date Watch Movements | Caliber Corner
seiko quartz mens watch vintage movement 5Y23A | WatchCharts Marketplace
Makszy's view on horology - Accuracy and Development - Seiko caliber
Seiko Caliber 5Y23A Watch Movement
SEIKO QUARTZ 5Y23-8C4LR. Men's wristwatch. Japan, ca. 1990. Figaro Auctions