Royal Canadian Mint - This oblong $250 coin is 99.99% pure silver, with a diameter of 161.8 millimetres by 100 millimetres and a nominal metal weight of 1,010 grams. Designed by Royal Canadian Mint engraver Matt Bowen, the concave-shaped reverse brings CN's golden age of steam back to life. A panoramic view hints at Canada's vast wilderness and features some of the scenery that defined a Canadian rail journey. Engraved in ultra high relief, CN 6060 rounds a bend as the steam locomotive hauls a line of passenger cars across a truss bridge. An antique finish completes the rail tribute and heightens the sense of nostalgia.