Seiko 150m Diver 6458 600b White DialThis SEIKO 6458 diver was released as a boys (middle) size 150m quartz diver (7548 xxxx) released in 1979. It was launched in 1982 and initially only had black and orange dials, but later this white and mint green were added. At 36. 5mm, the size is quite small, which is unique to the vintage. It has a different design inside the dial than the 42mm 7548 Diver, which is smaller but still has a presence. The bezel is well worn and the dial is in a very