coin errors

[Jordan0693 3]

I have a 2 pence piece which seemed to have been struck during manufacture 2x and has a circular slice missing from the side , imagine the apple logo it has the exact same cut on it as my coin does.

Plus I have a 20 pence coin and in the queens hair a raised part is visible which isn't part of the coin , seems like a crack die but can a cracked die make a raised blob on a coin

[Rob 3,152]

The first is a clipped flan arising from the blank being cut from the sheet too close to the previous one. The second is yes, because a cracked die has a break going into the fabric of the die which gives rise to a raised feature when the coin is struck.