Made of Silver 925 and oxidized on some parts to give an antique look. Shingen Takeda's family logo & flag slogan are engraved on the ring .
(風林火山) [Wind, forest, fire, and mountain] . It means "Swift as the Wind, Silent as a Forest, Fierce as Fire and Immovable as a Mountain"
You can engrave your name initial on one of the hexagon surface.
Manufacture time: 3~4 weeks+delivery date via EMS from Japan.