✓ Round, oblong or unique in shape
✓ Thick or thin
✓ Large or small in diameter
✓ Flat or convex
✓ Unscored or scored in halves, thirds, or
quadrants
✓ Engraved or imprinted with an identifying
symbol and/or code number
✓ Coated or uncoated
✓ Colored or uncolored
✓ One, two, or three layered