2019 40th Anniversary of Gold Maple Leaf. The item "2019 40th Anniversary Gold Maple Leaf GML $50 3OZ Silver Proof Coin Canada" is in sale since Thursday, May 2, 2019. This item is in the category "Coins & Paper Money\Coins\ Canada\Commemorative". The seller is "mario95coin" and is located in Ontario. This item can be shipped worldwide.