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OMEGA 50's Seamaster Cal.420

OMEGA 50's Seamaster Cal.420

Regular price ¥199,980
Regular price Sale price ¥199,980
Sale Sold out
Tax included.

Introducing the Omega Seamaster in the 1950s .

In 1894 , Omega's predecessor, the Louis Blanc Brothers Company, succeeded in developing a revolutionary movement.

Until then, watchmaking had different standards for parts, and each part had to be adjusted one by one, requiring considerable skill and time to adjust time accuracy.
As a result, highly accurate watches were extremely expensive.

Therefore, the Blanc brothers standardized parts to make them compatible and developed a movement that could be manufactured rationally, shortening development time and keeping prices low, while achieving astonishing precision at the time. succeed in obtaining.

The Blanc brothers gave this movement the meaning of "ultimate" and named it " Ω " , the last letter of the Greek alphabet, and changed the name of their company to the current "Omega Watch Company".


The two-tone dial has a unique uneven color due to aging on the dome-shaped "Bombay dial".
The faded " OMEGA " letters further enhance the vintage feel of the Seamaster, giving you a sense of the more than 70 years of history that this watch has spent.

It's not a sharp color like black and white, but a two-tone color with a pale tone, giving it a warm and soft color.
The classic design and the changes caused by aging harmonize seamlessly.

The movement is equipped with a hand-wound Cal.420 with 17 jewels.
It is a smaller version of Omega's famous hand-wound 30mm caliber, and is a rare movement that was only manufactured for about 3 years.

Although it is not plated with red gold, the beautiful base metal that is different from that is eye-catching.
Of course, each part has been carefully crafted to the finest detail.


Size: Height: 42.2mm , Width: 36.2mm , Thickness: 10.5mm .
It is a very easy-to-wear size and has a simple appearance without any flashy decorations, so it can be incorporated into a wide range of styles.

The edges of the case remain firm and the movement is in good working order.


A classic Seamaster.
The clicking sound that can be heard from the low-beat movement also creates a classical atmosphere.
This is a watch that will make you feel as if you have traveled back in time just by looking at it.

Product Details
Manufacture year 1950s
movement Cal.420 / 17 stones / manual winding
case size Height: 42.2mm (including lugs) / Width: 36.2mm (including crown) / Thickness: 10.5mm / Lug width: 18mm
case material SS (stainless steel)
accessories Watch body/original case/our store warranty (1 year free warranty)
situation Antique (used)
Waterproof function non-waterproof
Note *This product will be overhauled after you place your order, so it will take approximately 1 to 2 months to ship.
Thank you for your understanding.

*The color may look slightly different on the screen and in real life. note that.

*This product is also sold in stores. Although we update the stock quantity from time to time, there may be times when the product you have purchased is out of stock. Please note that in the unlikely event that there is no scheduled arrival, we may cancel your order.

All of the watches we carry in our store are internally inspected by a professional watch mechanic when they arrive, and are determined to be genuine before being sold, so you can use them with confidence.

When you purchase your watch, we will deliver it to you with a new leather strap.
Please select your desired color from the order selection tab and place your order.
*For products with genuine watch straps or metal bands, the leather strap will not be attached and will be sent separately as a spare.
We will also send you a special case for the watch when shipping.

●Be sure to check the information after purchasing an antique watch●

At Amboy, when we sell antique watches, we do not hand them over to you immediately after receiving your order, but instead request an overhaul (hereinafter referred to as OH) from a professional craftsman, and then deliver the watch after the OH is completed. (Duration is approximately 1-2 months)

Our professional craftsmen, who are certified as watch repair technicians, will completely disassemble your watch, replace consumable parts such as internal gaskets, clean it, lubricate it, and maintain it to the point where it is within ±1 minute per day.
We will also send you our own OH certificate, as well as photos of the machine when it was disassembled and serviced, to show you what kind of work was done during the OH upon delivery.

Of course, due to the nature of the product itself being a used item, there is no guarantee that it will never break, but we have taken this precaution so that you can enjoy the original performance of the watch and use it with confidence in the future. Thank you for your understanding.

When purchasing a product, we provide a one-year warranty period depending on the model. Even if the product is out of date, we will repair it for a fee. If you don't have a repair shop near you, please feel free to contact us.

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