Seiko Business Week Dater 6206-8190 Circa. 1960sMaker seiko Model 6206 8190 Movement automatic Dimension 37mm Glass Condition excellent acrylic condition with minimal crack Dial Condition No dial corrosion Case Condition 7. 5 10. with visible hairline Waterproof As they are Vintage pieces, please do not fully submerge the watch and minimal contact during hand washing Watch Summary launched in 1960s, Seiko Business Weekdater was one the flagship model of Seiko's automatic collection. It served as