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Regular price ¥220,000
Regular price Sale price ¥220,000
Sale Sold out
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Introducing Omega's "Half Rotor" in the 1950s .

 In 1943 , Omega introduced its first men's automatic wristwatch.
At the time, the automatic winding mechanism did not have a rotor that rotates 360 degrees to wind the mainspring as it does today, but rather the rotor rotated 3/4 of a turn to wind the mainspring.

When the rotor rotates, a spring is installed to soften the impact of a collision, and when it hits the spring, a unique sensation is transmitted to the wearer.
Because of this, it came to be called the "bumper type" or "half rotor".

It is a movement that still attracts many fans because of its high level of perfection, the high design of the model equipped with it, and the fact that you can enjoy the unique feeling of a half-rotor.


A half rotor with a classic look and a leaf hand on the small seconds at 6 o'clock based on a two-tone beige dial with two slightly different colors.
If you just look at it, it looks like a dressy watch, but since the Arabic numerals around it are designed in a pop style and the lugs are designed to gently curve, it can be worn as a dressy watch. It has a very unique design with two sides.

The points in front of the Arabic numerals are painted black, and the small seconds part has a sunray finish to ensure visibility, giving you a sense of high quality in both design and practicality.

The movement is equipped with a 17 jewel, self-winding Cal.332 .
As it was a high-class movement at the time, it was made with great care not only to be functional, but also to look beautiful.

Of course, it is also made with extremely high precision, and even after more than 70 years, it continues to have the precision and durability to withstand everyday use.
It is a movement that allows you to feel how much effort craftsmen at the time put into its development.


The size is 40.2mm long, 35.9mm wide, and 9.2mm thick.
Although it is a self-winding watch, its thickness is less than 1cm .
The size is a little large, but because of its thinness, it doesn't feel that big and has just the right balance.


The edges of the case remain, and the dial and movement are all in good condition.
This model comes with a RESUME original belt.


A half-roater that is easy to wear with both dresses and casual wear.
This item allows you to enjoy a wide range of styles, from formal suits and jackets to casual shirt styles, without having to change the belt.


Product Details
Year of manufacture 1950s
movement Cal.332 / 17 jewels / automatic winding
case size Length 40.2mm (including lugs) / Width 35.9mm (including crown) / Thickness 9.2mm / 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, since the product itself is 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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