Seiko Watch Identification Guide

cazalea · 2014-02-25T22:26:09Z

Learn how to identify Seiko watches using case back and dial markings. Cazalea's guide covers model codes, serial numbers, and specific details for models like the 'Samurai'.

cazalea

WPS member · Seiko forum

5 replies27734 views6 photos

Cazalea initiates a practical guide for identifying Seiko watches, a crucial skill for both new and seasoned collectors navigating the brand's extensive catalog. Using his own 'Samurai' as a case study, he outlines a clear, step-by-step process for deciphering case back and dial markings. This foundational article aims to demystify Seiko identification, empowering readers to accurately document and understand their timepieces.

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Hello Seiko fans,

It seems reasonable to me that we start out the new Seiko (and other Japanese watch) )forum with some clues on how to identify those mysterious Seiko watches that look great on your friend's wrist, have slipped to the back of your jewelry drawer, or are in a cigar box somewhere in the bedroom.

Seiko identification typically requires 3 or 4 steps. We will use the watch I'm wearing today as our first sample.

Although I bought it new, earlier today I didn't know exactly how to label or identify it. I believe I have the box and papers, but I have too many Seikos, boxes, sets of papers and so on. I've had the watch for about 6-7 years, and can't find its original packaging. But I know its nickname is SAMURAI.

Searching the Internet is the fastest way to locate the details of your watch. You will need as much data as possible from the watch case back. Here's the Seiko support document to help you find the numbers.

After some research, I created this small table of data to show that data that you might assemble for any Seiko watch.

SEIKO WATCH IDENTIFICATION

SEIKO MODEL CODES on the hang tag or box (not found on the watch)	SBDA001 (black ti), SBDA003 (blue ti) or SBDA005 (orange ti) SNM009 (white SS), SMN011 (black SS) SMNO15 (black SS pepsi bezel), SMNO17 (white SS pepsi bezel), SMNO19 (yellow SS), SNM021K1 (orange SS), SNMO31 (white SS), SNM033 (black SS)
MARKINGS ON MY DIAL	Japan 7S25-00C0 R 2
MARKINGS ON MY CASEBACK	Titanium 7S25-00D0 AO A SEIKO Air Diver's 200m
SERIAL NUMBER ON CASEBACK	410258
WATCH'S NICKNAME	SAMURAI
DETAILS	40mm case, bracelet, 200m diver, knurled crown at 3, automatic, non-hacking movement. 7S26 or 7S36 movement; 21600 beat per hour, 41-50 hours reserve; 21-24 jewels. Produced in Japan or Malaysia Stainless have waffle dial, matching date wheel, matching bezel and red second hand. Titanium have larger, darker hands, crown guard, matte finish and bezel differences.

Setting and operating instructions for most Seiko watches can be found on the manufacturer's site "seikowatches.com" under "support".

This is only an introduction, but it should get you started if you want to assemble your Seiko model table. I've got the bug now so I'll report back when I have an inventory of my own collection.

It might be fun if some other Seiko fans here did the same.

Cheers

Mike

PS - here are two Samurai that were once in my collection

This message has been edited by cazalea on 2014-02-26 08:14:28

Key Points from the Discussion

The process of identifying a Seiko watch typically involves 3-4 steps, starting with gathering data from the watch's case back and dial markings.
Key information for identification includes Seiko model codes (found on hang tags or boxes), markings on the dial and case back, and the serial number.
The 'Samurai' nickname refers to specific Seiko diver models, such as the SBDA001 (black titanium), SBDA003 (blue titanium), and SNM009 (white stainless steel), each with distinct features like case material, dial texture, and bezel differences.
Stainless steel Samurai models often feature a waffle dial, matching date wheel, matching bezel, and a red second hand, while titanium versions have larger, darker hands, a crown guard, and a matte finish.
The 7S25 movement, found in some Samurai models, is an automatic, non-hacking movement with 21,600 beats per hour, 41-50 hours power reserve, and 21-24 jewels.
The community recognizes this guide as a valuable resource, suggesting it should be preserved as a reference for Seiko collectors.

The Discussion

nilomis

Feb 26, 2014

Great post

Mike, Thank you for this valuable information. Post saved for future reference. Cheers, Nilo

KIH

Feb 26, 2014

You really are the expert of SEIKO!

Perhaps you know more than most of SEIKO watchmakers :-) Thank you for the great post - should be preserved as the SEIKO reference post. Ken

cazalea

Feb 26, 2014

Identifying a Seiko Watch, Part 2

I'd like to continue this theme with some more samples. I'll use roughly the same format, choosing some watches at random from my cabinet, and working through the identification process. We will use the same table of data to show what you can learn about your Seiko watch. SEIKO 5 WATCH IDENTIFICATION SEIKO MODEL CODES on the hang tag or box Unknown MARKINGS ON MY DIAL Japan 6347-6010 T MARKINGS ON MY CASEBACK 6347-601 A SEIKO Stainless Steel Water Resistant Japan A SERIAL NUMBER ON CASEBACK 5103

Bill

Feb 26, 2014

I feel like I just went to Seiko University

But I think my grade would have been a D. So much to learn and appreciate about Seiko. Bill

ED209

Feb 26, 2014

interesting read

Great post cazalea I need to spend more time absorbing all this info about identifying a Seiko watch. Regards, ED-209