2018 Big Coin Series – 5 oz. Pure Silver 7-Coin Set. SEVENTH COIN EXCLUSIVE TO FULL SET. Celebrate the history and artistry of Canadian coinage with this special series of pure silver circulation coins featuring selective rose gold plating. This 7-coin series includes 5-ounce pure silver versions of Canada’s 5-cent, 10-cent, 25-cent, 50-cent, and 2-dollar circulation coins. Two new designs : a Voyageur Dollar and an extra-special seventh coin-Canada’s former 1-cent piece, the Penny. Which is exclusive to the full set. Coat of Arms 50-Cent. Weight (g): 157.6. Diameter (mm): 65.25.