Sold at Auction: A VINTAGE SEIKO BELLMATIC WRISTWATCH; ref. 4006-6031, in stainless steel with dark blue dial, center seconds, day date, alarm functi...
1972 Seiko 4006-6031 Automatic “Bell-Matic” 17j
Seiko Bell-matic 4006-6031 | Ref. 4006-6031 Watches on Chrono24
Vintage Men's Automatic Seiko BellMatic 4006-6031 Made in Japan 80 s | eBay
Vintage Seiko Bell-matic 4006-6031 Gold Plated Auto Men's - Etsy Finland
Sold at Auction: Seiko - Bell-Matic automatic men's watch, 17 jewel
Seiko Bell-Matic #1 – Vintage Watch Advisors
Seiko 4006-6031 (17 Jewel Bell-Matic)... - The Watch Spot