Additional links
Part description on:
Slope, Curved 2 x 1 No Studs with Gold and Silver Armor Plate with Lion Head and Black Swirls Pattern Model Right Side (Sticker) - Set 70123
Bricklink ID:11477pb003R
Weight:0.250 g

Sets with this part (from Bricklink)
  Part color Light Bluish Gray

 Set nameRelease yearQuantity
7012370123 Lion Legend Beast20141