• Lieutenant's Signet of Lordaeron
• Item Level 115Disenchants into:
  [Large Prismatic Shard]: 1 (99.5%)
  [Void Crystal]: 1 (0.5%)
• Binds when picked up
• Unique
• Finger
• 110 Armor
• +30 Stamina
• Requires Level 70
• Equip: Increases your dodge rating by 21.
• Sell Price: 5 50 35

Source

This item drops from Lieutenant Drake in the Escape from Durnholde Keep in Caverns of Time under Heroic difficulty.

Patch changees

• Patch 2.1.0 (22-May-2007):  Armor increased from 110 to 143.
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB