The armor is called "Akazonae-no gusoku."
Ii Naosuke (1815-60) who was "Tairo =(great elder)" of the Togugawa shogunate (1603-1867) was effectively the director of Japan for from 1985 through 60.
>From the time of Ii Naosuke, the daimyo of Hikone domain, Each generation of the samurai who belonged to the family continued to wear the "aka-gusoku" armor.
They fought on the battlefield so bravely that the armor became well-known as the "Akazonae of Ii."
The samurai in the photo carries a red "hata-sashimono", which is the small marking flag and decoration which the samurai put in the back of armor (armor) etc.
The "doh (= trunk)", an armor which covers breast and abdomen, is so-called "Okegawa-doh."
The "Kusazuri" protector is in the form of "Shira-ito-odoshi-no Kebiki", of which is made of board and griddle with one thread for every step that there is no crevice in width.
Furthermore, the samurai wears "Tosei-sode (=present world sleeve)" ‚É"Hitai-ate" protector,"Kote" protector, "Haidate" protector ,"Wakibiki" protecto and ,"Ho-o-ate" protector.
The "Kabuto" helmet is on the "Gusoku-bitsu" container.
Although the "Kabuto" helmet was suitable for defense at the time of a battle, since trouble was caused to action, practically, the "Hitai-ate" protecotr was used.
It is quite rare too see the original "Hitai-ate" protectors and the original "Wakibiki" protectors existing now.