Zealous Golden Talons +15%/-10

I found this and I have never seen any piercing daggers til now. So I'm just wondering how much this should be sold for.

I am thinking 10plat since it is one point off max.


If you can't read the picture or it is not loading:
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Zealous Golden Talons of Defense
Piercing Damage: 7-16 (Req. 9 Dagger Mastery)
Damage +`5%
Armor -10 (while attacking)
Energy gain on hit : 1
Energy regen -1
Armor +5
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Thanks in advance.