In Wrath of the Lich King it is item level 251 and requires level 80. In MoP Classic it is item level 251, requires level 80 and sells to vendors for 1c.
Items Numbered Next to Relentless Gladiator's Shield Wall
Blizzard numbers items as they are created, so the named items next to ID 42561 (42556 to 42568) were usually added in the same batch as Relentless Gladiator's Shield Wall: the same quest line, zone, vendor or reward set.