Landed a tuna...a sort of rare one too.

I just received this today...it is fairly rare and you may have never seen one of these as I have only seen one or two over the years.

Lately, I have been on a vintage Seiko diver kick. A month or so back, I purchased my first two shrouded divers (H501 and H601). This time around, I purchased a Seiko 7c43-6020 "Mini-Tuna", which are a part of Seiko’s Quartz ‘Professional’ series. Although it is called the mini-Tuna, it's still a pretty reasonable size and is comparable in size to many current day divers.

It wears very similar to my H558 "Arnie" and is in very good shape (especially the case) for a watch of its age. It appears to be all original and the quartz movment (7c43) is working well. The 7c43 is the predecessor of the high torque 7C46 quartz bigger brother, which was developed exclusively for the quartz tunas (both 300m and 1000m).


These began production in 1986 and, based on the serial number, it's "born date" is May '91.

Technical Specifications:

Model: 7c43-6020

Movement: Seiko 7c43 quartz - considered by some to be a HEQ

Case diameter: 44mm

Case thickness: 12mm

Crystal: Domed Hardlex

Other: 200m WR, plastic shroud, rubber strap.

A few photos that i took today...the time was wrong, but so what :







And a group shot with the other watches that I have at work today...

Nice TUNA dude!

What a way to keep your vintage Seiko diver kick going here Mark ! It is
something to see ! Can't see anything "mini" about it either. The size is just
right, the look is intimidating, and the quality must be exceptional as well with
it. This is a SPECTACULAR find, and pick-up. Congrats, and thanks for teaching
us about it also by the way. ..You have to be so happy with how your vintage
Seikos are coming together. This one adds yet another layer to what is already
an very impressive fleet. I like how there are similarities to the "Arnie"
you picked up a while back, but still has it's own attitude. That back, and forth
of the stainless steel, and black is THE best. The way Seiko has that pattern
of black dial, black, and silver bezel, together with the black shroud, and extra
mean strap is out of this world. Just is really easy on the eyes with how it
all works together. Then when you realize that the all around look of the
watch is so different, as well as extraordinary, and rare, you are that much
more in awe. Even seeing the way different Seiko themes, and design ideas
continued, or I guess even maybe started with watches like this one is cool.
From the markers, and hands, to the case style, along with strap. This Seiko
is really SPECTACULAR ! I hope that you enjoy this one for many many years
to come Mark !

Spectacular watch, and PICS !

Nice Mark! I thought I was smelling something fishy.

great dial and bezel!
I never liked the shroud on these, if you like it then that's all that matters.
Enjoy wearing it Mark!

Me OTOH, always loved the shroud. I've been passively on the hunt for a black version myself. Love my Tuna. Very nice. Enjoy.

rather rare find! congrats! I had the ti 7C43 with light/pale yellow dial but eventually passed it on.