A Katana is a trading item in 80 Days. It is an antique Samurai sword with a razor sharp blade which can be found in Yokohama.

The Katana can be bought in Yokohama for around £150 (varies by seed)

It also plays an important role in the unfortunate incident which occurs aboard the Noelani from Yokohama to Honolulu.

Seed Buy in Sell in £
I Yokohama Burlington 3100
VI Yokohama New Orleans 3400
VII Yokohama New Orleans 3300
VIII Yokohama New York 3600