This 1970’s 44.5mm. Seiko 6138-0017 vintage UFO YACHTMAN Chronograph displays very good condition for its age. The stainless steel case has only minor marks from normal us and remains unpolished and original. The original dial, hands and inner bezel pop with their colours. This Seiko chronograph movement was just meticulously cleaned and all functions are operating perfectly. These watches were designed to be used in the auto racing world. These Seiko UFO watches are becoming harder to find these days in original and not modified condition.