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- Seiko Automatic Chronograph 'Bullhead'
Specification
- Product Code 40990320
- Manufacturer Product Number 40990320/AS05506
- Guarantee Analog Shift 1 Year Mechanical Guarantee
- Category Pre-Owned Watches
- Brand Pre-Owned Seiko
- Watch Markers Luminous
- Water Resistant Not Guaranteed
- Recipient For Him
- Movement Automatic
- Case Material Stainless Steel
- Dial Color Brown
- Strap Material Stainless Steel
- Diameter 44mm
- Brand Collections Bullhead
- Measurements Pre-Owned Seiko by Analog Shift














Pre-Owned Seiko by Analog Shift Seiko Automatic Chronograph 'Bullhead' 40990320/AS05506
$1,450.00Items in your bag will be held for 1 hour

- Free Delivery
- View our Returns Policy
- Authorized Luxury Retailer
- Gift Wrap Available In-Store
available finance plans for this item
- Product Code 40990320
- Manufacturer Product Number 40990320/AS05506
- Guarantee Analog Shift 1 Year Mechanical Guarantee
- Category Pre-Owned Watches
- Brand Pre-Owned Seiko
- Watch Markers Luminous
- Water Resistant Not Guaranteed
- Recipient For Him
- Movement Automatic
- Case Material Stainless Steel
- Dial Color Brown
- Strap Material Stainless Steel
- Diameter 44mm
- Brand Collections Bullhead
- Measurements Pre-Owned Seiko by Analog Shift
Why We Love It
Though the Swiss often get all the glory for producing the first automatic chronograph in 1969, Seiko quietly released the Calibre 6139 — a rugged automatic chronograph unit — as early as May of the same year.
In 1970, it made a few tweaks, adding an hour totalizer and a new quickset system, and released the Calibre 6138. Like its predecessor, the 6138 could be found in a number of unique dial and case configurations that have maintained collector interest through the years. Models such the Yachtsman and Kakune, often known better by their nicknames as the “UFO” and “Big Blue,” respectively, are particularly popular.
One of the most distinctive executions of the 6138 is this particular model, the 6138-0049 — or as it’s more commonly known, the “Bullhead.” In this execution, the movement was turned 90 degrees, resulting in subsidiary dial placement at 9:00 and 3:00 and the crown and pushers on top of the case. Sporting a large, thick steel case and unique brown and gold color patterning to the dial, the Bullhead has a truly unmistakeable profile and stands out amongst vintage chronographs of the era. Complemented by its rugged automatic chronograph movement, it makes a compelling addition to any collection.
This particular ref. 6138-0049 features a 44mm stainless steel case with an unsigned crown and barrel pushers at 11 and 1 o’clock; an acrylic crystal; a luminous brown vignette dial with gold sub-registers and a framed day-date window; a matching handset; a brown tachymeter bezel; and a stainless steel multi-link bracelet with signed blade clasp. For a watch from 1977, the dial, case and bracelet are in outstanding condition. Amazingly, this 6138-0049 comes with its inner and outer boxes, books, undated warranty card and hangtag.
It’s one thing to find an important vintage watch with much of its original ephemera. It’s quite another to find one that’s still so affordable over 50 years later!
The Story
For over 140 years, Seiko has been cranking out innovative and impeccably engineered watches at every price point, from entry-level Seiko 5s to world-class haute horlogerie pieces under the Grand Seiko brand. Underpinning the company’s efforts has been the mass production of reliable and accurate movements paired with a wide array of case and dial configurations.
Founded in 1881 by clockmaker and businessman Kintarō Hattori in Tokyo, Japan as “K. Hattori,” Seiko began importing Western timepieces and selling them in the local market. In 1892, Hattori changed the name of the firm to Seikosha (“house of exquisite workmanship”), which was further altered to “Seiko” in 1924. Following the Second World War, during which Seiko produced watches for the Japanese military, the company began its streak of innovations based upon affordable, in-house movements and Japanese savoir faire. These included myriad dive watches such as the famed 6105 and the fan-favorite 6139 chronograph.
Later, in 1969, Seiko would go on to produce the Astron, the world’s first quartz watch. This technological innovation was followed by the Seiko Kinetic in the 1980s, which married quartz accuracy with automatic, self-powering functionality. Today, Seiko’s product offerings are vast, including dress watches, dive watches, chronographs and much more, all of which are powered by in-house movements comprising different types of technology.
Despite a move toward luxury positioning and pricing in the brand’s modern offerings, vintage Seiko classics can still be had at incredibly reasonable prices today, making them a favorite entry point into the vintage watch world for myriad collectors. From their availability in post exchanges on military bases around the world to their fame from films such as Apocalypse Now to their presence at six Olympic Games, Seiko watches are deeply ingrained in the consciousness of the contemporary collector.
of great taste.
Standard Delivery (Est 1-3 Days) - Free
Our secure shipping service delivers Monday - Saturday between 8:00 a.m. and 6:00 p.m. For security purposes, every delivery requires an adult signature; Mayors does not deliver to P.O. boxes nor third party forwarding services. To find out more about delivery, click here. Tracking information is available upon request.
If you have any questions or concerns regarding your order, Mayors’ E-Commerce team can be reached at 1-800-4-MAYORS (1-800-462-9677), option 1, during the following times (Eastern Time):
- Monday - Saturday: 9:00 a.m. – 7:00 p.m
- Sunday: 9:00 a.m. – 5:00 p.m
- Closed Easter Sunday, Thanksgiving Day and Christmas day
Alternatively, you can email the E-commerce team at ecommerce@mayors.com.
Return Policy
Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.
10-Day Returns For Timepieces:Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.
30-Day Returns For All Other Purchases:All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.
On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.
All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.