16 Armour with a Tactics requirement of 8 or lower.
-2 Damage received in Stance
The above mods are a must the shield can have any one of the following of the following

Quick recovery from; Weakness, Blind, Poison, Bleeding.
Received damage -2/3 while hexed.
Armor +7-8 (vs Slashing, Blunt, Piercing Damage)
I can offer up to ~30K depending on the stats of the shield.