Soughtafter 1975 Seiko Japan automatic chronograph Bullhead watch that is disassembled and needs repair. Great way to add one of these to your collection at a low price. Large model with the pushers and winding stem at the top. Please look at all of the pictures to see what is included. Most of the parts are present. Offered in a 7-day auction and going to the highest bidder this week.


Automatic Seiko 6138-0040 chronograph watch with day and date display. Big presence on the wrist measuring 44mm across the center and 46mm top to bottom. The large case is in excellent condition, it has not been polished and has its original satin finish. Big Bullhead cases are often really bashed up. The original dial is mostly good with a few marks. The brown fixed tachymetre bezel has light marks and one ding as shown. The glass crystal is perfect. The chronograph sub-register hands are missing but the posts are there.


These Seiko are one of the great values in automatic vintage chronographs from this time period. When reviewing the many photos, which serve as a large part of the description here, keep in mind they are all magnified 2.5X to 5X clearly show the characteristics of this watch. However, tiny details shown in macro pictures are not relevant when viewing the watch in person.


Just one of a number of vintage 1970s Seiko chronographs and dive watches in the Squinky Vintage Watch Shop today. See our other auctions for a Seiko Tuna 7549-7010 300M diver, a Seiko UFO Yachtsman 6138-0010, a Seiko Turtle 6309-7049 and other sought after old Seikos.


Squinky Watch Talking Points


Brand: Seiko

Model: Bullhead

Date: 1975

Reference: 6138-0040

Origin: Japan

Movement: Seiko 21 jewels automatic-winding chronograph caliber 6138 with day and date display 

Case: original satin finish Stainless Steel screw back 

Dimensions: 44mm across, 46mm lug tip to tip, 16.2mm thickness, 20mm lugs

Bezel: external fixed, with light marks and a ding near 12 o'clock

Crown: original unsigned

Crystal: beveled edge, flat-top glass, no defects

Condition notes: watch is disassembled and not running - sold As Is and As Shown - has not been tested for water-resistance - our vintage watches are all sold As Is with No Returns


Squinky lists more vintage watches each week and vintage bands and parts every day. Go with a seller with more than 189,000 positive feedbacks on EBAY since 1998 and a member of the NAWCC watch collector's association since 1997.

See our Seiko vintage department for Seiko watch parts and bands.