Item #41177 (possibly named "Monster Sword 1h Northrend D02 Grey Deathfrost") doesn't exist. It may have been removed from the game.
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Monster - Sword, 1H Northrend D02 Grey, Deathfrost - Live
Monster - Sword, 1H Northrend D02 Grey, Deathfrost - PTR
Monster - Sword, 1H Northrend D02 Grey, Deathfrost - PTR 2
Monster - Sword, 1H Northrend D02 Grey, Deathfrost - Wrath of the Lich King
Monster - Sword, 1H Northrend D02 Grey, Deathfrost - Cataclysm