Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 59231pr0001 Shield Round Flat with Silver Skull on Dark Red Print Print of this part
• 59231pr0002 Shield Round Flat with Helmet on Dark / Medium Blue Quarters Print Print of this part
• 59231pr0003 Shield Round Flat with Circle, Triangle and Trident on Gold Background Print Print of this part
• 59231pr0004 Shield Round Flat with Gold Dragon Head with Jagged Teeth Print Print of this part
• 59231pr0005 Shield Round Flat with Captain America Design Print (Toy Fair 2012) Print of this part