1977 Seiko 6309-7040 Automatic 150m Pro Diver “Turtle” (Suwa)
When I bought this 6309-7290 it came with a pepsi bezel insert which was clearly aftermarket, replaced it with an 'original' today. What are your thoughts : r/Seiko
Help understanding the bezels on 6309-704X vs 6309-7290 | Wrist Sushi - A Japanese Watch Forum
Vintage Watch | Seiko 6309-7040 Turtle (Original bezel aged to a dark – Samurai Vintage Co.