Taito  / Square Enix Toys Premium accessory item. Dragon Quest AM Items Gallery Special series of replica swords. Perfect for cosplay. Sword length is 24 inches (60 cm).

Erdrick's sword (Sword of Erdrick, Loto's Sword in the GameBoy remakes) is a powerful sword featured in the first three games in the Dragon Quest game series that once belonged to the legendary hero, Erdrick. The name returned to being called Erdrick's sword for the games later released on Android and iOS. (Dragon Quest Wiki)

Alternate: Erdrick's sword (Sword of Erdrick, Loto's (Lotto's) Sword in the GameBoy remakes, Roto's Sword)