2013 Moon Landing Gold Coin

Best bet would be to contact the Canadian mint since they are the mint selling the set. And their page says not sold in stores. It appears to be a subscription sale set!

Why not? All a mint needs to do, when their marketing department dreams up some crazy scheme to detach coin collectors from more of their money, is to find some government somewhere who is prepared to pass laws giving their products legal tender status. On rare occasions, such ideas might even originate from the issuing country, which contracts out the coin production to the lowest bidder. The RCM is pretty good at winning lowest-bidder contracts.

But just because the RCM is selling the set, does not mean the RCM made the set. The RCM website is looking more and more like a coin dealer website these days, on-selling coins actually minted elsewhere. I don't believe these particular coins are RCM-made. On the sale page for the Collection, buried down in the blurb:

Thanks for the help guys but if its all the same to you, I'd rather stay on topic. I'm not so interested in hearing about the pluses & minus of what the RCM does and does not do. I just want to know who makes this coin. My girlfriend is into space & NASA stuff so I thought it would make a nice gift.

The only place I can find by Googling that makes mention of this coin is this thread on CCF. They don't seem to have made it onto the secondary market and have not yet made it into the coin catalogues. Given that the above artwork is from an artists impression and not an actual coin and given the "coins may be substituted" clause, it's even entirely possible that that particular coin was cancelled and never actually struck.

Have you tried contacting someone at the RCM and asking them which mint made those particular coins?