Assassin Yataghan Sword

The Assassin Yataghan Sword was a weapon obtainable during the Renaissance.

Statistics

Game	Damage	Speed	Deflect	Cost
Assassin's Creed: Revelations	1	2	1	N/A
Assassin's Creed IV: Black Flag	4	3	3	N/A

The Assassin Yataghan sword was the equivalent of the Common Sword from Assassin's Creed II and Brotherhood, being the first and weakest sword Ezio acquired.
Even with a different weapon equipped, Ezio would appear to have the Assassin Yataghan sword during the cutscenes inside Altaïr's library.
A pair of Assassin Yataghan swords called Ezio's Sword are available to purchasers of the Season Pass for Assassin's Creed IV: Black Flag as part of the Crusader & Florentine Pack. According to its in-game description they are a pair of swords once owned by Ezio.