Why is a planchet considered an error coin? Isn't this just an unused planchet? How do these find their way out of the mint?
It is usually found inside a sealed bag from the US Mint. It is unstruck so it is considered an error that they let it escape.
It’s not a matter of “letting it escape.” It a matter of how it got through the review system. Generally the larger the coin, the less likely something like this happens.
Hey @paddyman98 . Doesn't the first say Improperly Cleaned for real ? That's funny. A cleaned planchet . No?
If it's a type II, it had been through the upsetter, thus has a ridge. Somehow, bypassing the stamping makes it a mint error.