Where can I find the reference number of a Seiko watch?

Have you just bought a second-hand Seiko watch and would like to know more about your new timepiece? The first step is to find its reference numbera unique number that identifies it precisely. In this article, learn how to identify a watch model, predict whether its rating is likely to increase and identify old Seiko watches.

How can I find out which model of Seiko watch I have?

Have you just found a watch and would like to know what model it is? Don't panic, even if you're not an expert in watchmaking, there are several simple ways to identify the model of your watch.

1. Examine the bottom of the case

The first step is to look at the case back of your watch. Most watches have information engraved on the back that can help you. Here's what you should look for:

• Model number It's often made up of numbers and letters. For example, for a Seiko watch, you might see something like "4R36-00A0".
• Gauge reference This number indicates the type of movement used in the watch.
• Further information Such as water resistance, housing material, etc.

To identify the exact model number, look for the 7-digit reference number engraved on the case. The first 3 digits indicate the range (SKX, SAR...), the next 4 digits indicate the specific model. This number can also be found on the bracelet, case back or warranty. It allows you to find the exact characteristics of your model.

2. Look at the dial

The watch face can also provide important clues:

• Brand logo Make sure you identify the brand logo.
• Model name Some watches display the model name directly on the dial.
• Serial numbers : Sometimes there are specific numbers that can help identify the model.

3. Consult the original papers and box

If you have the original watch box and papers, they may contain the information you are looking for:

• Instruction manual It often contains detailed information about the model.
• Warranty card This card usually indicates the model number.
• Labels or stickers Original labels may also have the model number.

4. Use the Internet

There are several other ways to identify your model:

• Brand website Visit the official website of your watch brand. Many sites have a section for searching for models by serial number or features.
• Specialist forums : There are many forums dedicated to watches where enthusiasts can help you identify your model.
• Image search : Do an image search with a photo of your watch to find visual matches. Google Lens is very useful for this kind of search!

5. Consult a professional watchmaker

If you have tried all of the above methods without success, take your watch to a specialist. watchmaker or specialized jeweler may be the best solution. These professionals have the expertise and resources to accurately identify your watch.

How to recognize the authenticity of a Seiko watch?

We have written a complete article on this subject which we invite you to read: How to recognize a fake Seiko Arabic Dial?

Seiko watches are distinguished by several features:

• The Seiko logo can be found on the dial, bracelet or case back. The logo consists of the word "Seiko" and a stylized "S".
• The word "Japan" indicating the country of manufacture is usually inscribed on the back of the watch case.
• The codes "7S26", "7S36" or "7N36" correspond to the calibres of the most common Seiko movements.
• The presence of Seiko's exclusive Diashock shock absorption system.

Here is some additional information to identify and authenticate Seiko watches:

• Check the nameplate on the rear of the chassis. It represents the serial number and must match the number engraved at the bottom.
• Check the surface quality of the case, dial and hands. Seiko is renowned for its meticulous assembly.
• Observe the second hand: it should move smoothly, evenly and without jerking.
• Beware of fakes: Some details, such as logos or lettering, can be difficult to imitate.
• Compare with photos of similar models to spot inconsistencies.
• Check whether the luminous devices (hands, indexes) glow green in the dark.
• Make sure the file number matches the number on the bracelet or document.
• Beware of overly attractive prices, which are often a sign of counterfeiting.

If in doubt, have your watch appraised immediately by a professional watchmaker. The combination of these indications confirms that it is a Seiko watch.

How to identify an old vintage Seiko?

dentifying an old Seiko watch may seem complex, but by following a few simple steps, you can learn a lot about your watch. Start by examining the back of the watch case:

Most old Seiko watches have a reference number engraved on the back. This number is often composed of two parts: the caliber (movement) number and the case number. For example, "6309-7040" indicates a 6309 movement and a specific 7040 case. In addition to the reference number, you'll also find a serial number. Visit the first two digits of this number generally indicate the year and month of manufacture. For example, a number starting with "52" could indicate that the watch was made in May 1975 or 1985, depending on the context.

The watch face can also provide valuable clues. Look for specific markings such as "Seiko", "Automatic", etc. or other features unique to the model. The design of the dial, hands and indices can also give clues to the era and model of the watch. For example, some Seiko models from the 70s have very distinct styles that can help identify the manufacturing period.

The Internet is an invaluable resource for identifying Seiko watches. Use online databases specific to Seiko watches, such as SeikoWatchParts.com, which allow you to search by caliber and case number. Join forums dedicated to Seiko watches, such as Watchuseek or The Seiko Citizen Watch Forum. Members of these communities are often very knowledgeable and can help you identify your watch. You can also do an online image search using detailed descriptions of your watch to find similar models.

Certain details make it possible to identify an early Seiko:

• "Seiko" without S logo, used before 1984.
• The diving model is marked "Water 70m Proof".
• Old movement codes such as 6119 or 6106.
• Hands and hour-markers typical of the 60s and 70s.
• Rusty dial and yellowed lume.
• Acrylic glass (Plexiglas) instead of sapphire glass.
• Hand-assembled quality.

By checking these details, you can be sure you're holding a vintage Seiko.