A proof coin is a coin struck using a special, high-quality minting process, and made especially for collectors. Modern proof coins often have mirror-like fields and frosted devices, although proof coins struck prior to the mid twentieth century are often distinguished only by their high quality surfaces.
A reverse proof coin is a coin that is struck in the same manner as a normal proof coin, except that the fields are frosty and the raised devices are mirror-like. The term reverse proof does not mean that only the reverse side of the coin is struck in proof finish. The entire coin is in proof finish, with the "reverse" meaning stemming from the fact that the fields are frosty.....
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http://coins.about.com/od/coinsglossary/g/proofcoindef.htmA reverse proof coin is a coin that is struck in the same manner as a normal proof coin, except that the fields are frosty and the raised devices are mirror-like. The term reverse proof does not mean that only the reverse side of the coin is struck in proof finish. The entire coin is in proof finish, with the "reverse" meaning stemming from the fact that the fields are frosty.....
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Here are some pictures comparing Proof Eagle with an Uncirculated Eagle.
Aside from the mirror shine finish, can you spot the difference between the 2006 and the 2008 Eagle?
The pictures of coin is so attractive.
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