What is the value of a Canadian cent?
To determine the numismatic value of a Canadian cent, one must know the condition and date of the coin. Also needed for Canadian coins is whether it's a coin from circulation, a "Proof-like" uncirculated coin, a Specimen coin, or a Proof coin. To determine the legal tender value, one must know the current exchange rate from Canadian dollars to the currency in question.
Without knowing the date and mint markings, there is no way of knowing if you have a rare coin. However, most pennies never really go up much in value.