Page to find more about us. 2015 Canada Flag 7 Coins Set 50th Anniv. Special Edition Silver Dollar Proof Set. Please see images for actual grade and condition. The item “2015 Canada Flag 7 Coins Set 50th Anniv. Special Edition Silver Dollar Proof Set” is in sale since Friday, May 25, 2018. This item is in the category “Coins & Paper Money\Coins\ Canada\Proof/Prooflike Sets”. The seller is “skovac” and is located in Toronto, Ontario. This item can be shipped worldwide.