Bullhead watches are produced in 1970's but mostly for very little amounts. One of the most fameous bullhead is produced by Seiko, powered by 6138, one of the best chronograph of Seiko and watch industry. Here is a nice example of Seiko with very good condition. You'll like to wear it for sure. ● Movement Condition - 6138 automatic day-date movement is very clean and works nicely. Can be wind from crown unlike 6139 caliber seiko's. Works nicely, keeps time. Chrono stars,stops and resets as it should ● Dial Condition - Dial is very good condition, dial is aftermarket. Hands are replaced with aftermarket hands. ● Case Condition - Original case is good condition, some light scratches. Bezel insert is aftermarket. Steel strap and clasp are aftermarket and very good condition. Clasp signed. Strap will fit up to 23cm wrist. Buttons probably aftermarket too. This watch contains aftermarket customisations without permission from the brand. This could impact the watch value and might void manufacturer warranties. Including , polishing , aftermarket dial , hands , bracelet , bezel insert and pushers. We ask sellers to mention any known aftermarket parts.The brand might refuse servicing and repairs to watches modified by unlicensed watchmakers. Please use photos as part of the description. ● Dimensions - Very large size for that era. 43.2X45.3mm ● Glass - Good condition, no cracks and barely any scratches ● Timekeeping - Keeps time ● Production Year - Late 1970's ● Service History - Examined and oiled by a professional ● Shipping - Will be packed with care and shipped insured with fast carriers (UPS/FedEx) Usually arrives in 2-3 days. Combined shipping for multiple items. ● Please read description carefully. I tried to explain every detail ● Please try for reusing bubble wraps and hard box which the watch will arrive in it. I'll pack carefully so it'll not waste