A coin blank, call technically a planchet blank if has a circle mighty, worth a few bucks, maybe $ 2 to $ 4 if it has played, more if it is silver.
However, if the void currency has an edge notched on it, you're dealing with something completely different. Most likely, someone sheared the faces of metal out of coin, or earth out devices and polished the surface because they way the Mint US makes coins, it is impossible for a planchet to be empty and still have jagged edges, because jagged edges are created at the same time that the faces are affected.
There are some known currency affects issues that can cause a planchet nearly empty with jagged edges. If you see an impression very weak, but blurry or weak on planchet, could be a strike adjustment die, which is worth $ 20 to $ 40 depending on the type of currency and depth to strike. Another possibility for coins almost empty error is a strikeout, where something had between the moulds and the surface planchet, such as cloth or fat, when the currency was affected so dark or cancellation devices (or parts thereof) the value of these varies depending on the degree of obstruction and eye appeal and can run from $ 2 to $ 40, depending on what it was suffering through.
If your currency vacuum doesn't even rim mighty, still, it's technically a coin blank. If it is made of silver, is almost impossible to authenticate, but if it has played, an expert in coins of error could probably authenticate, in which case (if true) worth maybe $ 50 or more. Note that an empty of real currency will have a rough, perhaps the sharp edges, and the void can be watching foreman or grainy, depending on which part of the processing phase vacuum currency was when he left the Mint. Attention of Nice, shiny looking for spaces currency not excelled rim with a smooth edge. These counterfeit usually just facts of ATMs to deceive the blanks.
In all matters of this kind, you better get your chip vacuum watched by an expert. You can find a dealer of Coin PNG or send the sample to a specialist in minting errors for an opinion. As a third option, if you can post pictures in forum to collect coins or describe very carefully there and maybe we can provide some additional information.
