User blog comment:Gsimenas/Call Gsi Button/@comment-37.128.219.93-20141114135802/@comment-6697950-20141116125923

Neither of the references are from the anime and neither will be covered in the anime. The first reference is from a reboot series, while the second one is from a side story released as a doujin.

Just because it's "usually a different metal" doesn't mean that it's always the case. Especially if it's a story about a game instead of the game itself, as the author likely either doesn't put that much meaning the in such details or doesn't remember that he had used such a detail before. Either way, it is how it. We can't change what the author wrote. If he says that there are two types of gold coins, then there are two types of gold coins.

And I don't see how you intend to "tell people that those coins are different", unless you want to add it the word "another" before the second instance of "gold coin".

P.S. Why is this blog turning into a forum? It's not meant for prolonged discussions (that's what the forum is for), only for quickly contacting me in case someone needs me for something.