As others have noted, the cent planchet is much smaller and lighter than the nickel planchet. When a coin is coined on the wrong planchet, most of the time there are obvious clues (but not always). In this case, nickel details on the outer devices would be affected. Have a look at this specimen and you'll see what I mean -

If the coins are closer in size/weight, the more likely the devices will look more or less, correct (e.g. dime/cent). As folks here have suggested, your specimen has environmental damage (exposed to something or buried for a period). It's spendable.


















