Seiko Marinemaster Automatic Professional "Emperor Tuna" -... for $3,509 for sale from a Seller on Chrono24
Seiko - The Prospex Marinemaster Professional 1000m Diver's. Like its 1975 predecessor, the Marinemaster Professional 1000m Diver's has the two-layer case construction that is now the trademark of Seiko's professional diver's watches.