As others have said, that's a caster shield, no strength on it, patheticaly low block rate and strength, lower vitality compared to tank shields at that level also. You mentioned other gear you could not lot on, check the stats on armour, DPS gear has low defence stats that are equal, DRG gear has lower magic defence than defence. There are some exeptions to this mind.

Tank gear split off at lv15, all DPS gear is still rolled into one set at that level but is still labeleed DoW, most low level or generic caster gear is labelled as all classes.