vintage" Seiko 5 automatic 6309-5820. Is this a fake? It's being sold on eBay for $24 and I don't know how to spot a fake : r/JapaneseWatches
Vintage Nice SEIKO 5 6309-8800 automatic Silver DIAL DAY DATE SS 21 Jewels R45 | eBay
Vintage Seiko 5 6309-8900 35mm Automatic Day Date Japan Made Wrist Watch B5375 | eBay
Seiko Caliber 6309 Watch Movement | Caliber Corner
New Old Stock Seiko 5 automatic vintage watch, 6309-5820, casual, elegant & strong watch, 7009A movement, new old stock, gray dial, Baton hands, perfect condition, original bracelet & hang tag
Vintage Style Seiko 5 6309-601A 37mm Automatic Japan Made Gents Wrist Watch | eBay