On one side it says Elizabeth ii Dei Gratia regina, and on the other it says Canada 25 cents 1957. Any information on this?
This place has a lot of Canadian Coin info http://www.coinsandcanada.com and this is that coin: http://www.coinsandcanada.com/coins-prices.php?coin=25-cents-1957&years=25-cents-1953-2013
It is too worn to be worth any premium over melt. There's 0.15 oz of silver there so a few dollars. Check coinflation for latest valuations: http://www.coinflation.com/canada/ Right now, your quarter is worth $3.1934 based on silver content.
You need to learn a lot more about coins there is no philly mint in Canada. Pls learn before you speak