Seiko Chronograph 6138-0040

Seiko 'Bullhead' Chronograph automatic stainless steel gentl

Seiko 'Bullhead' Chronograph automatic stainless steel gentleman's wristwatch, reference no. 6138-0040, serial no. 4N0xxx, circa 1974, circular two tone brown dial with applied baton markers, minute markers, Spanish/English day and date apertures at the six position, champagne subsidiary hour and thirty minute recording dials and yellow chronograph centre seconds, tachymeter bezel, crown at the twelve position and push buttons at the eleven/one positions, signed 21 jewel movement, Seiko 'Fishbone' bracelet with Z040S end links, 44mm