for auction this vintage SEIKO "Blue" Bullhead Chronograph Wristwatch. Reference 6138-0040. Serial Number: 766123. Stainless Steel. Automatic Movement Caliber 6138B. 12 Hour and 30 Minute Registers. Quick Set Day (in English and Spanish) and Quick Set Date. Made in Japan. Circa 1977
This watch is complete and working, but it has a problem in the chronograph function (please check “Condition” topic below), so it is being sold as it is, for service, or useful as spare parts.