Keywords: Kasa-jirushi.png en A Jpanese Edo period wood block print of a kasa-jirushi a flag like badge worn on the back of the kabuto helmet of a samurai as a means of identification Tanki Yoriaku Hi Ko Ben Japanese book on samurai armor published in 1735 Hayakawa Kyuukei 1735 PD-old-100 PD-old-100 Jirushi |