Vintage Seiko SQ 100 Ref 6923-5130 Quartz Watch Mens Day Date - Etsy
1992 Seiko SQ100 vintage watch - YouTube
SOLD 1998 Seiko SQ100 watch 7N43-8001 - Birth Year Watches
Sold at Auction: Gentlemans vintage SEIKO SQ 100 Quartz wristwatch finished in silver tone with stainless steel bracelet. Day/Date model with sweeping second hand. Working when tested. Excellent condition for age.