Seiko Ceramic Black 'Submariner' Day & Date Diver's Automatic Watch Custom 6309 1987. Professionally SERVICED, Beautifully Refurbished.

Sold See similar items £126.50 37 Bids, FREE Shipping, 30-Day Returns, eBay Money Back Guarantee
Seller: ladyphyl2009 ✉️ (922) 100%, Location: Melton Mowbray, Leicestershire, GB, Ships to: AMERICAS, EUROPE, ASIA, AU, Item: 254016910370 Seiko Ceramic Black 'Submariner' Day & Date Diver's Automatic Watch Custom 6309.

Crazy 99p start price - and NO RESERVE...

This auction is for a superb Gents Seiko Automatic Scuba Diver's Watch. The model is the large steel-cased 6309-7290 F1, dating originally from November 1987.

The watch is in excellent pre-owned condition, with a customised Seiko Dial designed in the classic Diver style, in a rich Black. There's a new matching Chapter Ring, new custom '6309' Hands, a very smart new ceramic 'Submariner' style Bezel Insert, a new scratch-resistant Mineral Crystal, and a brand new aftermarket Seiko 'Accordion' rubber diver's strap.  

This iconic Scuba Diver's watch has a large dual-finish steel case, which has been expertly polished and rebrushed, and looks superb. The Japanese produced Seiko 17 Jewel Automatic movement has been  Fully Serviced  and regulated, and is running beautifully, keeping accurate time.  The watch also has a 'Quickset' Day & Date window at the 3 o'clock position.  I've upgraded the luminous treatment to the hands and markers (and the excellent ceramic bezel insert is luminous too). I'll also include a Seiko instruction manual (in PDF form, so you can print it, or save it to your computer).

Please read on.

Dial/Hands   Customised Seiko dial, designed in the classic Diver style, in a deep Black, with applied baton markers and an inverted Arrow at 12, in an ivory/white. The dial is signed 'SEIKO, AUTOMATIC' above centre, and 'WATER150MRESIST, 17 JEWELS' below centre, 'JAPAN 6309, Suwa Symbol, 747X R' below 6 o'clock. There's a 'Quickset' Day & Date window at 3 o'clock (the Calendar can be adjusted to display the Day in English or Spanish).  The Days are displayed in Black, except on Sunday, which is printed in a contrasting Red. The Chapter Ring is new, in a matching black, with a minute marker track. It's set at an angle, which adds an effective impression of extra depth to the Dial.

The hands are new, steel-trimmed in a luminous ivory/white, in the traditional 7002/6309 Style, an 'Arrowhead' Minutes hand, a 'Broadsword' Hour hand, while the Seconds hand is a steel needle with a lumed circle at the tip. The luminous treatment on the hands and markers glows nicely after exposure to light. Do note that the effect won't last all night, but it shines for a decent spell, which is a nice bonus (typical refurbished or aftermarket dials/hands don't generally have much 'lume', if any).   

Case Large dual-finish steel case, in a Satin-brushed finish to the upper surfaces, and a Highly-polished finish to the sides and back - overall in excellent condition, with minimal signs of use (I've had this professionally polished and rebrushed, and it has come up beautifully - I'm struggling to find any obvious marks, perhaps the odd tiny 'hairline' or swirl, but certainly no obvious dings or scratches). The case edges remain sharp and nicely defined.

Bezel  Bidirectional steel Bezel, medium/firm resistance, turns smoothly with 60 softly ratcheted 'clicks', in very good condition. I've fitted a standout new ceramic 'Submariner' Bezel Insert - also in black, printed with elapsed-time markings, and with a very unusual and effective luminous treatment.  

Caseback The screwdown caseback is in very good condition, again expertly cleaned and gently polished, with minimal negligible marks. The manufacturer wording on the caseback is clear and defined, and reads as follows: "Seiko, St Steel, 6309-7290 F1, Water Resistant, 7N5160, JAPAN, A, 'Suwa' symbol" plus the Seiko Wave logo in the centre. 

Crown Original Seiko ridged-edge steel crown, offset at the 4 o'clock position, screws down to lock, and adjusts correctly, stem is fine. Cleaned and polished and in very good condition, no apparent marks.

Crystal New scratch-resistant mineral glass, secured with a tension ring, perfect condition, clear and bright with no marks (checked under magnification).

Movement Seiko Japanese produced 6309A 17 Jewel Automatic movement. My watchmaker has fully serviced the movement for me. He reports it is in excellent condition, and appears original to the watch. I've regulated it and it is very accurate. The Serial Number indicates the original manufacturing date as November 1987.  All gaskets have been replaced. 

Strap  A brand new aftermarket Seiko Z22 'Accordion' style ridged rubber Diver's strap has been fitted, with a floating keeper, along with a new brushed steel buckle. Will comfortably fit a wrist size of up to 8.5" (220mm+).  I've fitted the strap with superior 'fat' Seiko Spring Bars, which work much better with this style strap, and help prevent wear to the case lug holes.  Some stock photos of the strap as supplied (you can 'click' to enlarge the pictures):

Running condition  Running, and keeping excellent time. As well as the full Service, I've regulated the movement. It's been tested electronically, and 'bench-tested' twice on a winder, over at least 24 hours each time, and is accurate to better than +-18 seconds per day max. (anything under 20 seconds a day is excellent for a vintage automatic). 

Measurements Width without crown - 41.8mm (46mm with Crown), Lug to Lug - 45mm, depth 13.1mm. Lug Width 22mm. Weight total 100 grams.

Other - This is a very smart Seiko Diver's Automatic watch, in a large 41.8mm, which wears quite proudly on the wrist as it's a touch over 13mm deep. Even though it's on a sporty Seiko Diver's rubber strap, it's a hefty 100 grams, and feels very solid and well constructed, with a substantial wrist presence. 

My watchmaker has FULLY SERVICED the 17 Jewel Seiko Japanese Automatic movement, which is working beautifully - the watch has been regulated and keeps accurate time.  The traditional style dial and hands, and the excellent ceramic 'Submariner' style bezel insert go together really well, and add to the iconic Scuba Diver's appearance. The luminous treatment on the Hands and Markers has been upgraded, and is quite effective, while the standout new ceramic Insert is luminous too. 

Though pre-owned, this watch really is in very good condition, with only minimal signs of use, and has clearly been maintained well. Plus I've had the case and caseback expertly refurbished, and it looks terrific, as you can see from the pictures.

  I'll send the winning bidder a PDF File with the full Seiko instruction manual, which will show you how to change the day and date and maintain the watch etc.

This model is of course no longer available, but I'm sure it will have cost more than my starting price - I'm starting my auction at just 99p, with NO RESERVE - you could get a top Seiko Automatic Scuba Diver's watch, expertly customised, beautifully refurbished, and professionally serviced and regulated, at a real bargain price!

I've tried to be as accurate as I can in the description of this watch, please read the description and look at the photographs carefully.  You should study the photographs, which I've taken in close up detail - it will be enable you to evaluate the cosmetic condition far more accurately than I can describe it. 

Postage for this item, packed weight around 130 grams and which will be securely packaged, will be FREE by First Class Signed-For Delivery (1-2 days delivery time), or if you prefer, I can use Royal Mail Special Delivery, which guarantees Next Day delivery (there will be an at-cost charge of £2.85 if you wish to upgrade the postage).  I always aim to dispatch my sold items within one working day of receipt of cleared funds. If payment is received before noon, I will post same day. Of course, should you win more than one of the items I'm selling, I will combine postage costs as much as possible if applicable.

UK Buyers - Payment by PayPal, Personal Cheque or Money Order please.

Overseas bidders (PayPal only). Tracked, Signed For, Insured Shipping will be £11.55 for Western Europe (Royal Mail International Tracked & Signed), £12.65 for N America, Canada and the rest of the World (Royal Mail International Tracked & Signed where available, otherwise Royal Mail International Signed). Shipping normally takes 3-9 working days to reach you, depending on destination, and subject to Customs procedures. I always aim to dispatch my sold items within one working day of receipt of cleared funds. If payment is received before noon, I will ship same day.

Unlike some sellers, the charges I use for Shipping overseas are set at the actual cost to me (and I do not charge extra for the packaging). Shipping costs will be combined as much as possible for multiple purchases.

 Any questions, please ask - I have described the item as thoroughly and honestly as possible - but I'll try and help if I can!

 Please Note: The majority of watches I sell are pre-owned, or New, but Old Stock. Whilst I go to every effort to describe the watches accurately, you should be aware that should a watch be marked Water Resistant or Waterproof, that was the case when it left the factory, and is not necessarily the case now.  Unless specifically stated, these watches are not fully serviced (though they will have been inspected inside and out).  Unless specifically stated, I offer no guarantees as to the current level of Water Resistance. If the winning bidder requires the watch to be Pressure Tested, I can arrange this for an at-cost fee of £25.00. Similarly, though I test all watches for accuracy and describe accordingly, this is no guarantee of future performance. Vintage automatic or hand-winding watches are by definition less accurate than their modern quartz counterparts. When purchasing a vintage watch, especially of high value, I would always advise the buyer to have the item inspected by a qualified jeweller, who should be able to identify any issues that I may have missed, and advise on water resistance, or servicing requirements.  Of course, should any issue then come to light, I will do everything possible to assist - as you can see from my 100% Feedback!

  • Condition: Used
  • Condition: The watch has been expertly polished and rebrushed, and the large dual-finish steel case is in generally excellent condition, with minimal signs of use. A new scratch-resistant Mineral Crystal has been fitted. The customised Seiko Dial is styled in the classic Diver layout, with applied dial markers. The Ceramic Bezel Insert, Hands and Dial Markers all feature a luminous treatment. The Chapter Ring, Hands, Bezel Insert and aftermarket 'Accordion' rubber Diver's strap are all new and perfect. The original Crown is in very good condition, cleaned and polished, and works perfectly. The watch has been Professionally Serviced and regulated, and keeps accurate time. Superior 'Fat' Seiko Spring Bars are in place. All gaskets have been replaced. Official Seiko Instructions are included in a printable/downloadable PDF File
  • Brand: Seiko
  • Model: 6309-7290 F1
  • MPN: 6309-7290 F1
  • Strap Colour: Black
  • Serial Number: 7N5160
  • Modified Item: Yes
  • Case Material: Dual-Finish Stainless Steel
  • Strap Material: Silicone
  • Modification Description: Custom Seiko Dial, Ceramic Luminous Insert, New Crystal
  • Case Finish: Dual-Finish Stainless Steel
  • Lug Width: 22 mm
  • Case Size: 41.8mm
  • Face Colour: Black
  • Movement: Mechanical (Automatic)
  • Watch Shape: Tonneau/Barrel
  • Style: Diver
  • Complications: 'Quickset' Date Feature, Date Indicator, Day Indicator
  • Number of Jewels: 17 Jewels
  • Water Resistance: Not Tested
  • With Booklet: Yes
  • Year of Manufacture: November 1987
  • Country/Region of Manufacture: Japan
  • Strap Type: Two-Piece Strap
  • Display: Analogue
  • With Original Packaging: No
  • Caseback: Screwback Case
  • Features: English/Spanish Calendar Display Options
  • Dial Style: 12-Hour Dial, Seconds Hand

PicClick Insights - Seiko Ceramic Black 'Submariner' Day & Date Diver's Automatic Watch Custom 6309 PicClick Exclusive

  •  Popularity - 54 watchers, 7.7 new watchers per day, 7 days for sale on eBay. Super high amount watching. 1 sold, 0 available. Super high amount of bids.
  •  Best Price -
  •  Seller - 922+ items sold. 0% negative feedback. Great seller with very good positive feedback and over 50 ratings.

People Also Loved PicClick Exclusive