The Royal Canadian Mint unveiled its royal wedding collectors' coins in Ottawa on Wednesday.

Gov. Gen. David Johnston was on hand as officials released the mint's set of two coins to mark the upcoming wedding of Prince William and Kate Middleton.

"We have a proud tradition of celebrating royal family milestones and we believed without a doubt that this historic event had a place among our prestigious and popular collection of royal-themed coins," said mint spokesman Alex Reeves.

The first is a $20 pure silver coin featuring the couple gazing lovingly at each other, surrounded by maple leaves and trilliums. It's marked with a sapphire-coloured gem to allude to Middleton's 18-carat sapphire engagement ring. The soon-to-be newlyweds' names are engraved on the edge of the coin. It sells for $104.95.

The second coin is a 25-cent nickle-plated steel coin featuring a coloured image of the young couple. This one retails for $25.95.

The royal wedding is set for the end of April, and the newlyweds will visit Canada this summer.

The mint and has boosted efforts to commemorate the monarchy in the wake of the royal wedding announcement. In March, it released coins featuring Prince William and Prince Harry. In May, it will unveil a series of coins commemorating the 60th anniversary of Queen Elizabeth's reign.