PC on Shield of the Wing 2 x Damage Reduction

Picked this up in LA earlier today for 1k, thought it might be decent on my warrior since I like the skin. This is the first time i've ever seen the second mod, so I thought I might see if its worth anything.

Shield of the Wing (Not an Aegis)
+16 Armor Req 10 Tactics
-2 Physical Damage While In Stance
-2 Physical Damage 7% Chance

-3(10%) used to be the max for that kind of dmg reduction mod but it's been increased to -5(20%) some time ago.