A new coin in salem? or not? '-'

Hello pilgrims, I was thinking of one thing, and would like to share this thought, would not say exactly what is a suggestion, but it would be good to discuss a little the subject, perhaps to know different opinions and such.
What I was thinking is a kind of new currency in the market, more valuable than silver, the gold coin, could be something like 10 silver coin by 1 gold coin.
The why of it, it would be a more interesting way to store higher amounts of money, and ease of making big changes.
Are currency conversion could be made at the bank, for a fee of 10% perhaps?
Finally, I would like to hear from you.
useless suggestion, or something good?
What I was thinking is a kind of new currency in the market, more valuable than silver, the gold coin, could be something like 10 silver coin by 1 gold coin.
The why of it, it would be a more interesting way to store higher amounts of money, and ease of making big changes.
Are currency conversion could be made at the bank, for a fee of 10% perhaps?
Finally, I would like to hear from you.
useless suggestion, or something good?
