This helmet was owned by Tachibana Akinao, the 7th lord of the Yanagawa domain. It is one of his collection of ‘kawari kabuto’, the so-called ‘unusual helmets’. He most likely collected arms and armors related to his ancestors since he was eager to compile the history books of the Tachibana family. All of his collection has characteristics of kawari kabuto in the 17th century, and represents the dynamism of warrior culture at that time.
This helmet is executed with bold and superb design, showing a wooden superstructure in the shape of a Chinese character, ‘大 (dai)’, meaning big or great, on the top; and a silver skull on the front.
This Chinese character ‘大’ was favored by samurai warriors because its shape, which spreads out wide toward the end, signifies being increasingly successful. It is also a part of the name of the person, 大澤三入, who presented this helmet to Lord Akinao.