CANADA. Piefort Gold and Silver Proof Set (2 Pieces), 2010. BRILLIANT PROOF. Both coins feature the traditional maple leaf reverse. Sold with original display case and certificate of authenticity #1013/3000.1) Gold 10 Dollars. Weight: 0.2 oz AGW; diameter: 16 mm. 2) Silver 5 Dollars. Weight: 31.39 gms; diameter: 34 mm.