Seiko Jumbo (6138-3005) Price Guide & Market Data | WatchCharts
The Seiko Bullhead Collectors Guide
1976 Seiko 6138-8020 "Panda" Chronograph | DC Vintage Watches
Question] Hi, I don't suppose anyone could tell me anything about this 6138-8020 Panda? Is the Arabic day wheel standard on all models? Thanks : r/Seiko