Well I posted this before i did the math...
Let's say there's 11 people with 100 coins each.
1 of them spends one hundred.
Now 1 person has 0 and the rest 110.
So the rest spend 100 and get 90 each and the person with none gets 100.
So they're back to square one with 100 coins each...
But them again this coin design might encourage hoarding so...
Who knows, there is only one way to find out and thats for someone to make the coin.