Biggin's Bonnet Cap	Defense: 17-19 (varies)(Base Defense: 3-5) Required Level: 3 Durability: 12 +30% Enhanced Damage +14 Defense +30 To Attack Rating +15 To Mana +15 To Life (Spawns In Any Patch)
Tarnhelm Skull Cap	Defense: 8-11 (varies) Required Level: 15 Required Strength: 15 Durability: 18 +1 To All Skill Levels 25-50% Better Chance of Getting Magic Items (varies) 75% Extra Gold From Monsters (Spawns In Any Patch)
Coif of Glory Helm	Defense: 25-28 (varies)(Base Defense: 15-18) Required Level: 14 Required Strength: 26 Durability: 24 +10 Defense Attacker Takes Lightning Damage of 7* Hit Blinds Target* Lightning Resist +15% +100 Defense vs. Missile* (Only Spawns In Patch 1.09 or later)
Duskdeep Full Helm	Defense: 45-60 (varies)(Base Defense: 23-26) Required Level: 17 Required Strength: 41 Durability: 30 +30-50% Enhanced Defense (varies) +10-20 Defense (varies) Damage Reduced By 7 All Resistances +15 +8 To Maximum Damage -2 To Light Radius (Only Spawns In Patch 1.09 or later)
Howltusk Great Helm	Defense: 64 (Base Defense: 30-35) Required Level: 25 Required Strength: 63 Durability: 40 35% Damage Taken Goes to Mana +80% Enhanced Defense Magic Damage Reduced By 2 Attacker Takes Damage of 3* Knockback Hit Causes Monster To Flee 25% (Only Spawns In Patch 1.09 or later)
The Face of Horror Mask	Defense: 34-52 (varies)(Base Defense: 9-27) Required Level: 20 Required Strength: 23 Durability: 20 +25 Defense +50% Damage To Undead Hit Causes Monsters to Flee 50% All Resistances +10 +20 To Strength (Only Spawns In Patch 1.09 or later)
Undead Crown Crown	Defense: 99-113 (varies)(Base Defense: 25-45) Required Level: 29 Required Strength: 55 Durability: 50 +30-60% Enhanced Defense (varies) +50% Damage Vs. Undead +50-100 Attack Rating Vs. Undead (varies) Half Freeze Duration 5% Life Stolen Per Hit Poison Resist +50% +40 Defense +3 To Skeleton Mastery (Necromancer Only) (Only Spawns In Patch 1.09 or later)
Wormskull Bone Helm	Defense: 33-36 (varies) Required Level: 21 Required Strength: 25 Durability: 40 +1 To Necromancer Skill Levels +80 Poison Damage Over 8 Seconds 5% Life Stolen Per Hit Poison Resist +25% +10 To Mana (Only Spawns In Patch 1.09 or later)

*Notes

Coif of Glory: Attacker Takes Lightning Damage of 7 does not work with ranged attacks.
Hit Blinds Target: Decreases radius of awareness similar to the Necromancer Curse: Dim Vision.
+100 Defense VS. Missile: Reduces the % chance of getting hit by missiles (by raising the effective armor rating).
Howltusk: Attacker Takes Damage of 3 does not work with ranged attacks.