What are Proof Coins?

2004 American Silver Eagle Proof
(click image for larger view)

Proof coins (proofs) are coins that are specially struck for collectors using polished diesDie
Metal piece engraved with the design used for stamping the coin. and planchetsPlanchet
Blank prepared piece of metal on which the coin is struck..

These beautiful coins are loved and admired by collectors all around the world.

2004 American Gold Eagle Proof
(click image for larger view)

When proofs are made they are struckStriking
This refers to the process by which a coin is minted. It could also refer to the sharpness of design details. For example, a sharp or strong strike will show all of the details struck very sharply, but a weak strike will show details lightly. two or more times with polished diesDie
Metal piece engraved with the design used for stamping the coin. on a planchetPlanchet
Blank prepared piece of metal on which the coin is struck. that has also been polished.

These polished and cleaned dies are specially selected and are wiped clean and re-polished every 15-25 impressions.

To make the coin as perfect as possible, even the coin blanksBlank
Prepared disk of metal on which the coin design will be stamped. First the disk is cut from large rolls of metal. These are Type I Blanks. Then they are milled to put a slight rim on the edge. These are Type II Blanks. Then these blanks, also called a planchet, are stamped into a coin. are polished.

Planchets for proofs are hand fed, one at a time, into the coin pressPress
This is the machine used to produce the actual coin. It can be a machine press, screw press or hammer press.. With multiple strikes from the press and extra pressure applied, the details of proof coins really stand out.

1958 Jefferson Nickel Proof
(click image for larger view)

Compared to regular coins for circulation, making proofs is a very slow process.

The finished proof coin is a very shiny, mirrorlike coin, most having frosted devicesDevice
Pattern or emblem used in the design of a coin..

These coins have extra sharp detailsDetails
Small features and fine lines in a coin design, such as seen in feathers, hair, leaves, and wreaths. and are not intended for circulation although they are legal tenderLegal Tender
Coins or currency which must be accepted in payment of debt.

Proofs are available as single coins, or in Proof Mint Sets. They are also available in Silver Proof Sets.

What Would You Like To Do Now?