Part IV. Die Errors:

Collar Cuds:

Bilateral Split Collar

Sometimes a collar splits at opposite poles and spreads apart. This produces a coin with two raised nibs at opposite poles and with a diameter that’s greater than normal along an axis that is oriented 90 degrees to the meridian that connects the two nibs. Signs of collar contact exist on either side of each nib, indicating the collar is still intact. Usually collar contact is visible even at the poles that lie at right angles to the nibs, although this might be a bit hard to discern on smooth-edged issues.

Depicted below is a 1964-D nickel with an impressive bilateral split collar. The planchet landed midway between the sides of the spread-out collar.

Close-up of the nib located at 11:00.Close-up of the nib located at 5:00.