A surprising '60s Seiko (ref. 66-9990) – Sky Corner
Seiko 66-9990] Little photo shoot of my first dress watch. : r/Watches
A surprising '60s Seiko (ref. 66-9990) – Sky Corner
SOLD 1970 Seiko Manual Wind 66-9990 - Birth Year Watches
Seiko SS 66-9990 watch -- from 1962 - Catawiki
Sold Price: A VINTAGE SEIKO MANUAL WRISTWATCH; ref. 66-9990 in stainless steel with sunburst dial, applied markers, center seconds, 17 jewel cal... - July 4, 0119 1:30 PM AEST