Antique Samurai Helmet Mid Edo Period Sanjuni Ken Suji Kabuto with Tokubetsu Kicho Shiryo Certificate
Period: Mid Edo Period (appraised by The Association for the Research and Preservation of Japanese Helmets and Armor)
Prime Material: Iron
Suji Kabuto consists of many small riveted iron plates to form its shape. This helmet has Sanjuni (thirty two in Japanese) iron plates. Suji means a stripe in Japanese, and you can see 32 stripes in this helmet. A high-class Samurai might have owned this helmet.
The Kabuto (兜, helmet) is a protector for the head. When people started using the Kabuto, it was initially designed for practical use. However, the principal purpose of its design has changed with time; Samurais tried to express their dignity, personality, or religion by wearing the characteristic design Kabutos. According to a theory, these unique designed Kabutos were made from the late Muromachi period to the Edo period. This type of Kabuto is categorized as the Kawari Kabuto (変わり兜), and a variety of materials were used to create them. For example, animal fur, seashells, plants, and papers were used as materials for decoration.
Before the Kawari Kabuto’s production, the Suji Kabuto (筋兜) has appeared during the Nanbokuchou (南北朝, 1337-1392) period. At that time, the tactic was gradually changed from the piggyback fight style to battle with the Tachi (太刀) sword and the Naginata (薙刀, Japanese halberd) on the ground. Therefore, there was a rise in demand for the weight saving of the Kabuto. Also, in order to turn the attack by swords, a new type of structure was invented; it is the Suji Kabuto. Its form slides swords’ attacks when weapons hit the Kabuto. It is said that the production of the Suji Kabuto prospered in the Muromachi (室町, 1336-1573) period. The Suji Kabuto production continued in the Edo period also; however, iron plates that Kabuto makers used at that time were thicker than the Muromachi period’s Suji Kabuto. Therefore, it was heavier, and we understand that then people cherished the Suji Kabuto to enjoy the old-style Kabuto, not to wear it on the battlefields.
This particular helmet features a Tetsusabi-iro Urushi-nuri (鉄錆色漆塗) finish, which means “iron-rust-colored lacquer coating.” Rather than exposing the raw iron or using a brightly colored lacquer, this finish mimics the subdued, aged tone of oxidized iron. It provides both protection and aesthetic value, blending durability with a refined, understated appearance that reflects the samurai ideal of quiet strength and elegance.
Please take a close look at the helmet crest (前立て, maedate) of this kabuto. We believe it imitates a crescent moon (三日月, mikaduki).
According to one theory, crescent moon-shaped crests originated from Myōken belief, a religion that began in India. It later fused with the worship of the North Star and was brought to Japan via the Asian continent. In this belief system, the moon and stars were sacred symbols, and Myōken Bosatsu (Bodhisattva) was believed to grant all kinds of wishes—such as bountiful harvests, peace, family prosperity, recovery from illness, long life, business success, traffic safety, academic achievement, and marriage.
Because of this, moon motifs became popular among samurai, who often expressed their faith through the decoration of their helmets. The former owner of this kabuto may have worn it as a symbol of such devotion. A famous samurai known for using a crescent-shaped maedate was Date Masamune (1567–1636). He inherited his family estate at the age of 17 and greatly contributed to the prosperity of the Tōhoku region. His kabuto featured a large crescent moon decoration, which remains a highly popular design today in replica helmets.
In addition to the crescent-shaped crest, this kabuto also features a golden “Mitsuba Aoi” (三つ葉葵, three-leaf hollyhock) crest, an important and historically significant symbol in Japan. This crest is most famously known as the family emblem of the Tokugawa clan, the ruling shogunate family that governed Japan during the Edo period (1603–1868). The Tokugawa shogunate established one of the most powerful and enduring military governments in Japanese history, and their crest came to symbolize authority, prestige, and legitimacy.
In Japan, family crests (家紋, kamon) function similarly to European coats of arms. They identify noble families or clans and are traditionally used on clothing, armor, and official documents. The Mitsuba Aoi crest, in particular, held such status that its unauthorized use was strictly forbidden. The presence of this crest on the helmet strongly suggests that it once belonged to someone of noble heritage or a household with strong ties to the Tokugawa lineage.
On the fukikaeshi (side flaps of the helmet), though faded, a Karajishi (唐獅子, mythical lion) can be seen, just like the motif on the maedate. This creature, introduced from Tang-dynasty China, is depicted with a curly mane and symbolizes wisdom in Buddhism, often shown as the mount of Monju Bosatsu (Manjushri Bodhisattva).
While this helmet does not show peonies, the Karajishi Botan (唐獅子牡丹, lion and peony) motif is a classic pairing in Japanese art. The lion, king of beasts, and the peony, king of flowers, together represent strength, beauty, and auspiciousness.
A Buddhist tale tells of a lion plagued by insects in its fur. These insects die from the night dew of peonies, so the lion sleeps beneath the flowers. This story reinforces the symbolic harmony between the two motifs.
*The maedate (helmet crest) is believed to have been made after the Meiji period(1868-1912), and is not original to the helmet itself.
Certification：Tokubetsu Kicho Shiryo Certificate
The certificate was issued by The Association for the Research and Preservation of Japanese Helmets and Armor, which is the most trusted Japanese armor appraiser in Japan. Tokubestu Kicho Shiryo means special rare article. It is ranked as the third highest of five rankings.
This helmet was authenticated on May 11th 2025 as a Tokubetsu Kicho Shiryo and the paper mentions the helmet was made in the Mid Edo period. The purchaser will receive the original certificate as well. We can also translate what is written into English and make a PDF file for your record if you request.
An English translation of the certificate is available on request. We won’t charge any additional fee.
【About us】
Samurai Museum is located in Tokyo, Japan, exhibiting antique artifacts related to the Samurai history. Samurai Museum Shop is the place for those who are interested in Japanese culture and craftsmanship. We deal with antique Samurai swords/armor, traditional crafts made in Japan and so on.
【Antique Japanese helmet (Kabuto) and Export process】
After receiving the full payment from you, we will apply for its export permit from the Board of Education to legally export the helmet to other countries. It normally takes around 2-4 weeks to receive this permit. And we would like you to expect at least 1.0-1.5 months for your order to arrive at your given address after you ordered.
【Payment Method】
We accept payment through Stripe (Credit card), PayPal, Apple Pay or ChromePay, all of which are secure payment methods. Also, you don’t need to make an account on Stripe for the checkout. If you prefer other payment method, please contact us. After confirming your payment, we will apply for an export permit. You may either pay in JPY, USD, AUD, CAD, EUR, CHF or GBP. The price is set in Japanese Yen. Prices in other currencies are automatically calculated based on the latest exchange rate.
【Shipping Duration】
We ship via EMS (Japanese Postal Service). It normally takes at least 5-14 days to receive any packages after you place an order. It might take longer depending on the season or custom clearance. We will inform your order’s tracking number via email.
*Please keep in mind there is possible delay expected in delivery with EMS in some countries due to the pandemic in the world. We offer free shipping only when we can ship by EMS.
【How to make sure the condition】
Please keep in mind that what you are going to purchase is an antique item. We uploaded high resolution photos for you to check its condition thoroughly. If you like to see more photos with different angles, please feel free to contact us. We will be happy to send them to you so that you can make informed decision. It is essential for us to know that you are happy with your choice of a sword. and we are prepared to use the best of our ability to serve you.
【How To Contact Us】
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【How To Preserve Antique Samurai Armor/Helmets】
Dryness, humidity, and bad ventilation might deteriorate the condition of antique Samurai armor/helmet. The best temperature to preserve Samurai armor/helmet is around 20℃ in Celsius, and humidity should be about 60%. Direct sunlight should be avoided. We recommend storing armors/helmets in a room with good ventilation. If you like to display them outside the boxes for a prolonged time, we suggest using a glass case in order for dust not to be accumulated easily. In case you don’t use a glass case, please make sure to regularly dust off from the armor/helmets by using a soft brush made of delicate cloth or brush for painting.
If you like to know more about the preservation of this armor, please feel free to contact us.
