Zimbe 2

 

Here's one of the first Professional dive watches from Seiko, predating the 6159-7000/1 that followed in 1968...
A very hard to find 6215-7000 from April 1967:
It turned up on ebay a couple of years ago looking like this.....



Then after a full movement service carried out by Duncan Hewitt (The Watch Bloke) and a replacement Bezel insert from Yobokies:

 

^ nice.

What’s the use of the reverse numbering on the bezel?

I would suppose it becomes a countdown timer of sorts. Am not a diver so i have no idea if it has use on a dive.

 

Seiko’s Pressge Midnight Blue enameled dial is in nice contrast to the off white lacquered hands and gold crescent moon counterweight ( on the second hand )

 

Some seiko 6309

 

It's just a different way of doing the same thing I suppose. I've never really seen the point of a countdown bezel, and it seems nor do many other people as it seems to have just about disappeared in the wild.

 

It took me a while to find one in the condition I wanted, but I got lucky and stumbled upon this one on Yahoo Japan with 22 minutes remaining.

The listing pics were pretty terrible, but just clear enough to give me a tonne if hope. Here’s what arrived: a 6306-7001 from December of ‘78

 

That is a lovely 6306. I especially like the creamy patina of the lume. I have several 6306’s with the same creamy lume. Also, 6306’s often seem to have a “crisper” Tsunami than similar 6309’s.
Overall, very nice indeed.

 

Thanks Jim! I agree about the lume and it’s what I was after for my 6306. It makes for a great contrasting one-two combo with my minty 6309:

 

I have a couple watches with a countdown bezel. It's not useful for diving, but is great if you need to set a stop time for a task. For example, I work in video production, and often use a countdown to monitor how much time I have to finish up a portion of the shoot, or to know when I need to circle back to my crew to hand off new memory cards. That sort of thing.

What I really like is the combination of a countdown bezel with a chronograph function. Then I can count up or down depending on the task.

 

Let's see that tsunami then, please.

 

Zimbe 1

 

Here’s the tsunami on one of my 6306’s. I like to see a crisp wave and the slight frosting of the sky.

 

Monopusher Chronograph

 

Very nice....
Here's the black dial version from January 1965:

 

Missed my chance when they first released and took about another 5 years of searching on and off to find a NOS SARB072

 

Here you go! Sadly marred by a clumsy attempt at opening it up at some point in the past

 

Here is the rather unusual case back from my 6309 that you might find interesting... notice the circular markings... a few Seiko friends have speculated it might be the result of a broken/damaged tool...

 

Very strange. almost as if the tsunami is deposited onto a machined surface.

 

A few of those I shared it with had other examples with similar swirls, but the dates were not similar, if I recall. Odd indeed. One of life’s mysteries