Edo Period Fans are unique collectible Relics in Tomb Raider (2013). There are three Edo Period Fans in the game.
Green Folded Fan
A silk fan. Could've been used by a villager or a noble, maybe.
Gunbai War Fan
It's a Gunbai... used by Samurai to relay orders to their soldiers in battle. Pretty solid. Must be made of stained cypress.