Date Masamune Samurai Armor: One-Eyed Dragon Yoroi For Sale

Claim Your Legacy – Armor of the One-Eyed Dragon

Date Masamune was a legendary Daimyō (feudal lord), renowned for his sharp military strategies and unmatched presence during the late Sengoku (Warring States) and early Edo (Peaceful States) periods. Revered as the “Dokuganryū” (One-Eyed Dragon of Ōshu), Masamune’s legacy was amplified by his iconic crescent moon maedate (helmet crest) and his bold leadership in founding the powerful Sendai domain.

The gomai-dō (five-section cuirass), favored by the Date Clan, became known as the Yukinoshita-dō or “Sendai Dō” due to its prominence in the region Masamune founded. Based on the yokohagi-okegawa (horizontal tub-sided cuirass) design with ito-mono (long plate) lamination, this style provided both exceptional protection and a striking aesthetic—making it a popular choice among high-ranking samurai for its balance of strength, comfort, and customization.

Iron Mountain Armory’s senior katchû-shi (Japanese armor smiths) have meticulously recreated this historic armor using traditional crafting techniques. The armor features a 32-plate suji-bachi kabuto (laminated helmet), which can be customized in plate count or replaced with another style of kabuto to match your vision. The armor’s vibrant crescent maedate shines as a symbol of ambition and fearlessness.

Like all of our Taisho-class yoroi, this full-sized suit is fully functional and handcrafted to your specifications. You can personalize every element—from the paint and odoshi (lace) color to the helmet, mask, and mon (clan crest)—ensuring a truly unique piece of samurai heritage.

Key Features & Benefits:

Taisho Class handcrafting – elite quality & historical precision

Full-sized & functional for reenactment, martial training, or display

Gomai-dō cuirass (Yukinoshita-dō) with yokohagi okegawa structure

Optional customization for color, lace, size, kabuto, & more

Includes display box & wooden armor stand

Shipping Information:

Your armor will be crafted by our most experienced Taisho katchû-shi using traditional methods and carefully selected materials. Please allow at least 2 to 3 weeks for hand-forging, assembly, and final preparations. This suit is a statement of prestige—an heirloom that honors the legacy of one of Japan’s most iconic daimyō.

Ride with the One-Eyed Dragon – Become Legend in Steel

For more information, please review our Order Options Explained, Glossary Terms or FAQ Pages. You can also Contact Us directly. We are always happy to be of service.

References: Samurai Archives / Samurai Armour: Volume I: The Japanese Cuirass by Tervor Absolon

Description

Claim Your Legacy – Armor of the One-Eyed Dragon

Key Features & Benefits:

Taisho Class handcrafting – elite quality & historical precision
Full-sized & functional for reenactment, martial training, or display
Gomai-dō cuirass (Yukinoshita-dō) with yokohagi okegawa structure
Optional customization for color, lace, size, kabuto, & more
Includes display box & wooden armor stand

Shipping Information:

Ride with the One-Eyed Dragon – Become Legend in Steel

For more information, please review our Order Options Explained, Glossary Terms or FAQ Pages. You can also Contact Us directly. We are always happy to be of service.

References: Samurai Archives / Samurai Armour: Volume I: The Japanese Cuirass by Tervor Absolon

Additional information

Weight	27 kg
Dimensions	54 × 54 × 64 cm
Gift Card Value

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Date Masamune Taisho Gusoku

Standard Options

Kabuto Options

Mon Options

Sizing Options

Accessory Options

Extra Design Options

Advanced Paint Options

Extra Lace Options

Claim Your Legacy – Armor of the One-Eyed Dragon

Key Features & Benefits:

Shipping Information:

Ride with the One-Eyed Dragon – Become Legend in Steel

Description

Claim Your Legacy – Armor of the One-Eyed Dragon

Key Features & Benefits:

Shipping Information:

Ride with the One-Eyed Dragon – Become Legend in Steel

Additional information

Reviews

Q & A

Great News! 🎉

Select the LACE (Odoshi) Color you would like for your armor. (Click through the product images to see different Lace Colors.)

Select the Linen Material or Art. Silk Brocade used for your Armor parts.

Select the Leather Color and/or Egawa (pattern) used of your armor parts. (Haidate (armored apron), Light or Medium Suneate (shin armor))

Select the style of Suneate (shin armor) you would like for your armor. (Picture is for reference only.)

This option is available for Suji-Bachi Style Helmets, and allows you to chose how many plates are used to craft the “bowl” section of your helmet. The Standard Option is “Simulated” which means the helmet bowl will be crafted from a single sheet of steel and made to look like it is crafted from several pieces.

Add a Kasa Jirushi no Kan (ring with tassel) to the back of a helmet with an Agemaki Bow (a specially knotted cord).

Customize the visor of your helmet with embosed eyebrows and/or wrinkles.

Select your choice of face armor available for your yoroi. Standard and Ressei Menpo option will give you nose and mustache options. Henpo and Hoate are without nose option.

Add character to your armor by selecting a custom mustache option.(This option is only available with certain mask / nose styles.)

Select to add 1 or 2 Chest Rings (Saihai no kan & Tenugui no kan) to your Dō, used to display tassels or hold a saihai or gunbai. (Select option from the perspective of wearing the armor)

Add a Banner Holder (Machi-Uke) to the back of your Gashira or Kachi Dō (chest armor) so you can attach a Sashimono (war banner) to your armor set. (Add Optional Wooden Banner Base)

This option offers to make your kuzazuri (skirt plate) detachable / interchangeable. Commonly used in the past for fast repair / replacement of the kuzazuri, or removable for fast and quiet movement of troops.

Select the Mon (symbol) to be painted on the front of your Dō (chest plate).(Option Not Available with Suna finish)

Choose to add Samurai or Custom Mon (symbol) to your Yoroi Bitsu (armor box). Custom Mon's needs to be e-mailed to us in a mono-color, “Clip-Art” format.(Click through the product images to see different Standard Mon Options.)

Add 1 or 2 WAIST RINGS (holding rings) to either side of your Dō (chest plate), used to hold bags, tie a weapon, Gunbai and/or your Sarashi in place. We recommend adding both if you are training in your armor. (Select option from the perspective of wearing the armor)

Add a symbol (mon) to the ears (fukigaeshi) of your helmet. This can be a standard mon or custom design you can email us in "Clip-Art" format. (Click through the product images to see different Standard Mon Options.)

This option is for the waist circumference of the Dō (chest armor). 5: Place a tape measure on your navel (belly button) and straight around your waist, finishing at your navel. The tape measure should be snug, but not tight. Please Note: Sizing is for REFERENCE ONLY and may not reflect the final product. Please read the FAQs for more details.

Adjust the armor to your Height. Standard sizing is 5' 8" (175 CM). Select the option closest to your actual height. If unsure, select 1 size smaller and enter your actual size in the order comments.

Please select the option that is closest to your weight or next weight level greater, so our armorers can better fit your armor to your body size.

Add a long cloth belt used to hold your dō firmly in place for a more comfortable with and to hold weapons and other accessories to your waist.

Add Traditional Straw Sandals to your order. Select 1 size smaller.

Add a pair of waraji (traditional straw rope sandals) to your order as well as a pair of tabi (traditional Japanese socks) to your order. Available in 3 sizes.

Gashira (Officer): Expertly handmade from a mixture of quality traditional and modern materials, as well as some modern crafting process. This class of armor is crafted with a good attention to detail. Crafting Time: 20 to 35 Days. Materials Used: Bowl style kabuto, steel construction, traditional brocade, hemp, quality cotton, brass, copper fittings with genuine leather & and some synthetic materials might be used. (materials may differ depending on model) Our “Gashira Class” yoroi represents the next level up from our “Kachi Class.” Each suit is meticulously handcrafted by our experienced katchû-shi (armor smiths) at Iron Mountain Armory. These artisans pour their warrior spirit into every piece, using quality materials and traditional crafting methods, complemented by modern techniques, tools, and design advancements. Like the Taisho Class, each suit is heavily researched and crafted with great care for historical accuracy. The principal difference between the Gashira and Taisho classes is that the Gashira Class is crafted with a practical bowl-style kabuto (simulated laminate) and some machine-stamped parts. The Gashira Class also features subtle modern enhancements, such as grommets and spot welding, making the armor more robust and easier to maintain. Our Gashira Class samurai armor is made for collectors, exhibitions, re-enactors, and martial artists who desire an authentic “Gendai” samurai suit of armor without the additional expenses associated with the more traditional design and handcrafting methods of our Taisho Class. The Gashira Class features a more traditional Gendai design compared to the Kachi Class and includes features such as real animal hair, genuine leather, a removable or interchangeable nose, brass fittings, shoulder padding with kikko (armor plating), traditional butted mail, opposable thumbs, leg/waist support on haidate, extra materials, fittings, riveting, grommets, additional lacing options, and an included armor storage/display box (yoroi bitsu) with stand. The attention to detail is a significant step up from the Kachi Class. However, due to the handcrafted nature of many parts, there may be some blemishes that pass through our QC process. Although we strive to avoid and correct these blemishes, they are a natural occurrence in handcrafting. Taisho Class suits will have fewer, if any, of these blemishes due to the high standards and meticulous review processes.

Select the color and finish for your Fukigaeshi (ears) of your kabuto.

Select the Color & Finish for your Shikoro (Neck Guard). (You can change the BOTTOM PLATE using "Advanced Custom Options" below.)

If you would like to change the color of the BOTTOM PLATE of your Shikoro, you may select it here. If not it will match the option your provided above.(This option should only be chosen if you would like the neck plates to be a different color than those of the main Helmet.)

Select the color & finish your Sode Bottom Plates (Suso no ita) will be painted. (Image for reference only. Options may differ between classes and models)

Select to change the Kusazuri (Skirt) Color / Finish. (If left blank it will match the MAIN ARMOR COLOR option selected above.)

Select the Color & Finish your Kusazuri (Gessan) Bottom Plates.

Select the color used for the BOTTOM HORIZONTAL LACE, on ALL Bottom Hanging Plates. (If left blank MAIN LACE COLOR will be used) (Image for reference only. Options may differ between classes and models)