Black lacquered samurai helmet with standing rivetsHaruta SchoolMomoyama to early Edo Period, 16th-17th Century A 62-plate koboshi-bachi [helmet bowl with small standing rivets] of typical tenkokuzan form, with 30 pointed rivets on each plate decreasing in size towards the top, with the exception of the larger front plate, with three lines of rivets and the small one on the back which is left blank, for a total of 1,890 rivets.The visor (mabizashi) is of high quality, embossed with simulated eyebrows, stylised as bamboo leaves, and brow wrinkles; a tsunomoto is fixed on...