Coin Collecting > Coin Glossary

Coin Glossary

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You can find most popular coin collecting phrases in this coin glossary.

U

unc or unk or UN - abbreviation for uncirculated.

uncirculated or un-circulated - a new condition coin that does not have any sign of wear. Marks on the coin that may come from the manufacturing process do not keep a coin from being un-circulated. (Example, bag marks.) Even the slightest amount of wear or cleaning will keep a coin from grading uncirculated.

upsetting mill - machine used in coin production to raise the rim on both sides of a blank (planchet).

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06/19/2018
$2 coin celebrates 30th birthday at Royal Australian Mint
You may not have as many jingling in your purse or pocket as you did a few years ago, but the durability of the $2 coin means it could be around for decades to come, despite Australia's shift towards a cashless society. It's 30 years today since the small ... more info

06/18/2018
How a Few Nickels Grew Into a Multi-Million Dollar Coin Collection
In the late 1980s, William Morton-Smith, a Santa Barbara, Calif.-based doctor, was rummaging through a garage that contained some of his deceased parents’ belongings. He opened the drawer of an old desk, and “there was a bunch of loose coins,” says ... more info

06/19/2018
How a coin led Ace Staffing Unlimited's top exec to move to Florida (Video)
Two decades ago, Tanya Meyer knew she wanted to leave Wisconsin. But she wasn't sure where to go. So she took a personal risk and based that decision on a coin flip: heads, Florida; tails, California. "It was heads." Today, she is president of Mount Dora ... more info