6309-5820] First Seiko. Gorgeous red. From eBay. No idea if frankenstein. But I love it! : r/Seiko
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
SEIKO 6309-5820 AUTOMATIC men's Wristwatch NOT Working FOR Repair All original | eBay
Seiko Sports 6309-5820 Vintage OH Day Date Divers 200M Automatic Mens Watch | eBay
SEIKO 6309-5820 AUTOMATIC men's Wristwatch NOT Working FOR Repair All original | eBay
Authentic or just a good lookalike | The Watch Site
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