1960s vintage Seiko 66-8050 RARE mechanical mens Japan wristwatch black dial

Precio habitual $145.00 USD
Precio habitual Precio de oferta $145.00 USD
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Availability: Agotado
SKU: 167540899610
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Precio habitual $145.00 USD
Precio habitual Precio de oferta $145.00 USD

1960's Vintage RARE Seiko 66-8050 mechanical men's wristwatch

Stainless steel case. Early seiko logo

Made in Japan. Black dial

Movement Seiko 66A, 17 Jewels, shock-proof balance

This vintage timepiece features a sleek black dial, minimalist hour markers, and the original mechanical movement (Caliber 66), offering reliable, manual winding performance. Housed in a classic stainless steel case, it reflects the clean, elegant design of mid-century Seiko.

Made in Japan, this model is increasingly hard to find, especially in well-preserved condition. Whether you're a vintage watch collector or simply appreciate timeless craftsmanship, this Seiko 66-8050 adds a touch of history and style to any wrist.

A sophisticated and collectible piece for those who value authenticity and design.

 

Very good condition! The dial has been professionally refinished and looks perfect. Please see the photos for the assessment of watches. Runs well and keeps time accurately. Really watches look much better than in the photo. New PU leather strap as a gift!


DEFECTS: shows small traces of use; the dial has been refinished


COUNTRY OF ORIGIN: Japan

MANUFACTURER: Seiko corp


OVERALL CONDITION (10-point scale): 8-9


CASE

Condition (10-point scale): 8-9

Inscriptions on the back cover: seiko, stainless steel, 66-8050, water resistant, serial number and Japan


GLASS

Material: acrylic

Condition (10-point scale): 8-9


DIAL

The dial has been refinished

Condition (10-point scale): 9-10


STRAP

New PU leather strap as a gift!


MOVEMENT

Mechanical: hand-winding

Caliber Seiko 66A

https://ranfft.org/caliber/9640-Seiko-66A

Basic Information

Name Seiko 66A
Manufacturer Seiko
Launch Year 1964
Caliber Family Description
66A: manual wind
6601A: automatic

modified hands gear:
66B, 436, 4361: manual wind
6601B: automatic
6602B: manual wind, date
6606B: automatic, day, date
6619B: automatic, day, date quickset

Related calibers
Seiko 436, Seiko 4361, Seiko 6601A, Seiko 6601B, Seiko 6602B, Seiko 6606B, Seiko 6619A, Seiko 66A, Seiko 66B
Is COSC certified No

Technical Details

Lignes Dimensions 10.5 ‴
Dimensions 23.69 mm
Height 3.85 mm
Further Measures Mounting Diameter (Dm): 23.6mm
Stem height (T): 1.8mm
All Incl.: 0.3mm
Mounting Height (F): 1.2mm
Power Reserve 45 hours
Frequency 18,000 vph
Jewels 17

Complications and Specifications

Shape Round 
Complications
  • Sweep Second 
Shock Protection Diashock 
Regulator Type Pinned Regulator (or Index Regulator) 
Movement Type Manual 
Escapement Type Swiss Lever 
Control Type Balance Wheel 
Winding Type Stem Winding 
Setting Type Stem Set 

Additional Information

Hand Sizes 1.50 x 0.90 x 0.20mm
Hand Count 3
Country Of Manufacture (not set)
Notes Remarks: stem mechanism without setting-lever spring
Diafix combined settings for escapement wheel
Other data: balance staff: U3236 stem: W3181 mainspring / battery: Seiko 401660 balance staff ronda: 5206 (10,5)
Signature 1964: Seiko, Japan, 17 Jewels; Diashock (Seiko 66B)

 


DIMENSIONS, WEIGHT, FUNCTIONS

Width

1.38 inch (35.0 mm)

Width with crown

1.50 inch (38.0 mm)

Length

1.65 inch (42.0 mm)

Depth

0.45 inch (11.5 mm)

Crystal

1.22 inch (31.0 mm)

Total weight (with strap)

1.69 oz (48.0 g)

Function

Hours, minute, second

Country made

Japan

Dimensions of watches


HISTORY

https://en.wikipedia.org/wiki/Seiko

Seiko Holdings Corporation, more commonly known simply as Seiko is a Japanese company that manufactures and sells watches, clocks, electronic devices, semiconductors and optical products.

History and ongoing developments

The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the name Seikosha, meaning roughly "House of Exquisite Workmanship". According to Seiko's official company history, titled "A Journey In Time: The Remarkable Story of Seiko" (2003), Seiko is a Japanese word meaning "exquisite" or "success".

The first watches produced under the Seiko brand appeared in 1924. In 1969, Seiko introduced the Astron, the world's first production quartz watch; when it was introduced, it cost the same as a medium-sized car. Seiko later went on to introduce the first quartz chronograph. In 1985, Orient and Seiko established a joint factory.

The company was incorporated (K. Hattori & Co., Ltd.) in 1917 and was renamed Hattori Seiko Co., Ltd. in 1983 and Seiko Corporation in 1990. After reconstructing and creating its operating subsidiaries (such as Seiko Watch Corporation and Seiko Clock Inc.), it became a holding company in 2001 and was renamed Seiko Holdings Corporation as of July 1, 2007.

Seiko is perhaps best known for its wristwatches, all of which were at one time produced entirely in-house. This includes not only major items such as microgears, motors, hands, crystal oscillators, batteries, sensors, LCDs but also minor items such as the oils used in lubricating the watches and the luminous compounds used on the hands and the dials. Currently watch movements are made in Shizukuishi, Iwate (SII Morioka Seiko Instruments), Ninohe, Iwate (SII Ninohe Tokei Kogyo), Shiojiri, Nagano (Seiko Epson) and their subsidiaries in China, Malaysia and Singapore. The fully integrated in-house production system is still practised for luxury watches in Japan.

Seiko mechanical watches are highly prized by collectors: from the Seiko "5" series (the 5 reflects five key features of the watch, namely automatic winding, day and date display in a single window—rare at the time, water resistant, recessed crown at the 4 o’clock position and durable case and bracelet—i.e. steel), which is the most common, to the highly prized luxury "Credor," "King Seiko," and "Grand Seiko" lines. The A359 5040 Sports 100 Chronograph, released in 1981, is an extremely rare chronograph, with only a few examples seen world wide. An employee of Seiko Australia, in response to request for information about the watch stated, "Sorry, all the details of that model have been lost in the mists of time. We have no images on file."

Today, Seiko Kinetic watches account for a large proportion of sales that combine the self-energizing attributes of an automatic watch with quartz accuracy. The watch is entirely powered by its movement in everyday wear.

RECOMMENDATIONS

All Antique watches are mechanical. Many repairs will not be cheap, as most likely they will require replacement of non-standard parts (unlike most late model watches).

  • Antique watches should not be beaten or dropped - because repairs may be expensive.
  • Antique watches are generally NOT waterproof. This is because waterproofing was not in general production until the middle of the 20th century for most watches. Therefore you should protect your antique watch from exposure to moisture.
  • If your watch becomes wet it should be dried off quickly. Carefully open all covers and use a hair drier to blow dry the movement, dial, covers, crown. This will reduce the amount of rust.
  • If your watch becomes wet with any kind of salt water you should immediately immerse or spray your watch with fresh (no-salt) water to remove all the salt from the works before drying the watch completely. Any salt left in the watch will combine with moisture in the air to rust metal components of the movement, case etc.
  • Winding any mechanical watch tight may break the mainspring. If you can avoid it do not wind the watch hard.
  • When adjusting the hands of your watch, move them in a clockwise direction only. Counter-clockwise adjustments may damage the movement. It is desirable to adjust the hands of your watch at the same time every day. An automatic or self-winding watch should be worn for at least 8 hours a day. It is a mechanical watch in which the mainspring is wound automatically as a result of natural motion of the wearer's arm, to provide energy to run the watch, making manual winding unnecessary.
  • If you must adjust counter-clockwise make it for small adjustments only (i.e. for minutes, NOT hours).
  • Be careful and gentle when adjusting the movement speed (faster or slower). Don't make sharp movements, and don't touch other components in the movement especially the pendulum mechanism.
  • Every 2-3 years it is necessary to service and oil vintage watches. If the course of your watches is worsening and the accuracy of the reduction in the duration of the clock (autonomy) from one fully wound spring - it need a service.
  • IF the watch is dirty - allow the watch to run down, don't wind it again until you have it serviced by a qualified watch repair expert. Dust will absorb and remove important lubricants and cause the movement pieces to wear down.
  • To clean the case, dial and crystal you should use a cloth that does NOT leave fibers as these may get caught up in the movement. Check with your Watch repair expert to get an appropriate cloth.
  • Keep your antiques watch away from magnets. Strong magnetic fields may affect the accuracy of your watch since some vintage watches were made with iron based components in the movement.
  • Most Cases and Covers are fine components and will not handle abuse well. The watch should not be shaken, beaten, or stressed.
  • Antique watches generally experience an error of up to 5-7 minutes a day. Any accuracy of +- 5 minutes is very good.
  • Mechanical watch is not recommended to use for engage in extreme sports, and expose them to excessive vibration loads. Recoil force, which take on the clock, affect their reliability and precision. No matter how perfect was not anti-shock mechanism, there is always the chance of excessive load that details of the mechanism can not survive.
  • Watch with calendar. It is not recommended to adjust, the date between 20.00 and 06.00, because at this time involved a mechanism for automatic adjustment date. Translation pointers calendars manually in this position arrows may damage the mechanism. Date changes should be made, relegating pre-clockwise to lower sector of the dial (for example, to position 6 (18.00) hours).
  • Chronograph watches. In most cases, these watches contain the "start/stop" button and "reset" button. It is strongly recommended not to press the "reset" if the chronograph is running. Before you use the "Reset" button need to stop the chronograph by button "start/stop". Using the "reset" when running chronograph can damage the mechanism of most models of watches.

PAYMENT

  1. Total amount due includes the final auction price plus Shipping.
  2. Shipping will be determined based upon the SHIP TO address. PLEASE NOTE: Shipping does not include duties, local taxes or any other importation fees.

SHIPPING

We ship to any country. This item will be shipped to you from Europe (Ukraine) via registered airmail with tracking number and insurance within 7-14 days (except for the weekends and holidays) after the payment is fully received.

Typical Delivery Time

          • European Countries: about 7-10 days;
          • USA, Japan & other: about 10-14 days.

NOTE: Delivery time may increase because of postal services and/or customs. Please, don't worry and check location of your parcel using provided tracking number. In spite of delays all our previous lots have been successfully delivered!

The item will be packed very carefully!

RETURNS/REFUNDS

  1. You have 3 days to contact us and 5 days to return it from the date it was received. If this item is in your possession more than 3 days, it is considered used and we will not issue you a refund or replacement. There are no exceptions!
  2. All returned items must be in the original packaging and you must provide us with the shipping tracking number, specific reason for the return, and your eBay ID.
  3. We will refund your full winning bid amount, upon receipt of the item in its original condition and packaging with all components and accessories included, after both Buyer and Seller cancel the transaction from eBay or you may choose to have a replacement.
  4. Return shipping is to be paid by the Buyer.

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