Canada. 2017 Football-Shaped Curved Silver $25. This is the first football-shaped curved coin from Royal Canadian Mint. It contains 1 Oz of .999 fine silver. Mintage: 8500. It was certified as a First Day of Issue (FDI) coin by NGC, that means it was released by the mint during the premier day of the series' issue. NGC graded Proof 70, First Day of Issue. Estimated Value $50 - 100