Okoshi Chu Mfg., Inc. - Local Guide Biz
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Tadayasu Armor Made by Okoshi Chu Mfg., Inc. – The Best Art

Okoshi Chu Mfg., Inc., which is a traditional Edo armor making company, was established in 1964. Since then, it has made armors for May dolls, which are displayed to wish for boys’ health and growth on Boys’ Day (May 5th). The company is located in Miyamoto-cho in Koshigaya city, Saitama Prefecture.

The armors are made by gathering traditional skills across Japan, such as goldwork, woodwork, Kyoto textile, braid or leather craft. In the 5000 processes, more than 100 craftsmen are engaged.  The armors are called “Koshigaya Armor” in Koshigaya city, and they were designated as a Saitama’s traditional craftwork in 1996.  A product called “Bottle Armor”, which is a decoration for Japanese sake or wine, is also popular in foreign countries.

Armor: Tenka

Tenka (No. 7 and 10)

Kabuto (Helmet): Tatsuno Kabuto with Hawk Feathers (No. 7 and 10)

Kabuto (Helmet)
Tatsuno Kabuto with Hawk Feathers (No. 7 and 10)

Bottle Armor: Shiraito Scarlet Hinomaru Armor

Bottle Armor
Shiraito Scarlet Hinomaru Armor

Traditional Craftsman Who Have Received a Lot of Prime Minister Awards

Tadahiro Okoshi, who is the third generation of Tadayasu Okoshi, was born in 1969. In 1993, he started to study under his father. In the following year, he won the gold prize for his artwork, “Going into Battle.” After that, he also received various awards such as Prime Minister Award, The MInister of Education, Science and Culture Award, The MInister of International Trade and Industry Award, The Minister of Economy, Trade and Industry Award, and the Small and Middle Enterprise Agency Award.

His works are based on traditional technique, but he also adopts modern and fresh senses to make armors which attract various kinds of customers.

Third Generation : Tadayasu Ohkoshi

Qualifications: Traditional craftsman recognized by the Minister of Economy, Trade and Industry, Saitama “Koshigaya armor” traditional craftsman, and a doll craftsman recognized by Japan Doll Association.

Okoshi Chu Mfg., Inc. introduced “Amor Watch Date Masamune” on the crowdfunding site Makuake from September 5th, 2021, which is the birthday of Masamune Date (9/5/1567).  This product was created by the cooperation among Okoshi Chu Mfg., Inc., Kyowa-Seiko and Yusuke Taguchi. Kyowa-Seiko is famous for the high-quality watch “MINASE.” Yusuke Taguch is a product designer and works in Tokyo and Milan in Italy. Here is the detailed information about the watch.

Official Videos


If you want to see the related clips, click or tap the playlist icon displayed at the top of the clip screen and find for your favorite clip.

You can purchase at the shops below

株式会社 大越忠製作所


Hello. I’m Haruka. I have lived in Saitama prefecture for more than 25 years. I would like to introduce Saitama focusing on food and culture. I hope my articles help you get some information about Saitama. Also, I’m happy to tell you about interesting aspects of Japan. Check out Haruka’s profile page here.

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