In Wrath of the Lich King it is item level 213, requires level 80 and is named Deadly Gladiator's Left Render. In MoP Classic it is item level 213, requires level 80 and sells to vendors for 1c.
Blizzard numbers items as they are created, so the named items next to ID 42265 (42259 to 42271) were usually added in the same batch as Deadly Gladiator's Slasher: the same quest line, zone, vendor or reward set.