For most, the term “dipping” refers to dipping a coin into a rather mild silver cleaner. There are several brands, but the most commonly used is. alcaserv.us › us-coins › understanding-classic-u-s-coins-building-excell. Ebay poses some difficulties in identifying dipped coins, because identifying the It's not always easy detecting this type of contact mark “cleaning”, but PCGS is.
Detecting dipped coins -
The whizzed coin may appear to have an odd pattern of luster, and many hairlines when rotated under light. How does the eBay market affect the retail pricing guides? It also argues against bidding on coins that look dipped. Whizzed: A coin that has been whizzed has been "whizzed" by a wire brush rotating at a high speed. For example, the chances of flipping a coin heads 3 times in a row does not mean that this coin over flips will land heads every time. It has usually been dipped in a cleaning solution, scrubbed with a brush, or wiped with a cloth. A cleaned coin, is any coin that has had any of its original surface normal circulation grime or tarnish metal removed, all or in detecting dipped coins,
to reveal the unnatural lustrous surface underneath. Some coins with black or dark toning improve detecting dipped coins with an expert dip. This oscillation occurs at a greater magnitude for raw coins than for certified coins to be explored later. This is different than cleaning a coin, which alters the metal on the surface of the coin. Note that conservation will not remove evidence of a cleaning on a coin.