A near mint Seiko 5ACTUS SS from 1970 is all original except the bracelet and presents stunningly.

I'm not sure but I think the "SS" sub brand was a Japanese domestic release only. And also not sure that the "SS" stands for "Second Setting". All the SS models I've seen house the 6106 movement which features hacking (stopping the watch when setting the time) allowing for synchronized setting. 

The condition is, overall, excellent, very hard to fault. The index markers, "Seiko" logo and date window all appear mint. The iridescent white dial is also near mint. And the same with the hands.

The glass is original perspex, polished in the overhaul and presents like new.

The case has been lightly re-finished and presents beautifully. 

The bracelet is new, quality stainless steel, Duraflex brand. It will fit up to 21.5 cm wrist, approx.

The 6106C movement and its variants are, in my opinion, Seiko's best ever movements. It features hacking and high 23 jewel count. It is pristine with no corrosion, in fact, downright beautiful. It has just been professionally overhauled/serviced, functions perfectly and is guaranteed.

Caliber number 6106C
Case number 6106-8420
Serial number 040624
Dial reference 6106-8440R

A note about the timegrapher report  

After overhauling and calibration, this watch performs exceptionally well so I include a photo of the timegrapher reading. Please be aware that this reading was taken on the bench and results may vary in the real world because accuracy depends on several variable factors, mainly temperature, power on the mainspring and general conditions of use.  

Overhaul/Service Explained 

I am often asked about what an overhaul entails. So, I have started adding a photo of the movement, disassembled ready to go through the cleaning machine. All old dried-up lubricants, crud and anything else that shouldn't be there is cleaned away. Then, the movement is reassembled, lubricated, adjustments made and regulated. Routinely, the back and the crown seals are replaced (where possible) as are the spring lugs. The case is lightly re-finished if necessary. Also the glass is re-polished if required and possible.


Customer satisfaction is our priority.

This watch has been professionally overhauled/serviced and is guaranteed for 90 days from date of purchase.

If there is any problem with your purchase, please contact us and it will be sorted or your money will be refunded.

Water resistance, accidental damage and accuracy, within reason, is not guaranteed.


International buyers; Postage cost includes insurance. The purchaser is responsible for any import duty and/or taxes. Please be aware that, in recent times, international postage is experiencing longer than usual delays. 


SEIKO 5 HISTORY (provided by a colleague trading on Ebay as market*master):

First released in late 1963 the Original Seiko 5 is a modified SEIKO SPORTSMATIC.

Seiko decided they needed an affordable watch that was versatile and durable. An everyday device that could handle a wide variety of different situations and environments. So was born the '5' concept.

The '5' came from the 5 features they wanted to incorporate into the watch.

These were:

1. Automatic winding

2. Day/date display

3. Water resistance

4. Recessed crown at the 4 o’clock position

5. Integrated metal bracelet

The '5' was an immediate success and has gone on to become the most successful line of mechanical watches in history.


About vintage mechanical watches:

A vintage mechanical watch will not perform like a modern quartz (electronic) watch. Also, with age comes fragility and it may no longer be ideal as a daily wearer. It should be treated for what it is, something old, classical and special. Treat it as you would a vintage car - not ideal to use as a “daily driver”. Keep it in the condition at which you bought it and it will hold or, indeed, increase its value. Use it every day and it will go backwards.

About Me:

I am a born-again watchmaker! I finished my apprenticeship in 1973 having completed technical training at the RMIT, Melbourne. In 1977 I went into retail (jewellery and watches). In the mid 90’s I realised that the watches that once were common had become rare and I began to appreciate their beauty both aesthetically and mechanically. That’s when I started collecting classics. When covid hit in 2020, I retired from retail, set up a workshop at home, regained my skills and am now restoring classics with a passion.