Sanbonsugi: The sanbonsugi hamon is characterised by a series of 3 evenly spaced waves that resemble pine trees. It is usually connected with the Aoe kind of sword-building which is noted for its straightforward and stylish visual appearance. In 1719, Tokugawa Yoshimune, the 8th shogun in the Tokugawa shogunate, ordered Hon'ami Kōchū, who was an