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5. What is the purpose of the reeded (milled) edge on coinage?

Originally the coin was milled in order to

  1. prevent scalping the edge of precious gold and silver coins.
  2. indicate the highest valued denomination coin at that time.

Now it is done in order to

  1. identify the specific coin easily (distinguish the specific coin from others).
  2. prevent the counterfeiting.

The holed coin is produced in order to

  1. identify the specific coin easily (distinguish the specific coin from others).
  2. prevent the counterfeiting.
  3. conserve coinage material.