The 1/5 ounce idea is interesting because it sits between collectible silver and practical denomination.

Large silver pieces are good for storage, but smaller units make the mental math easier. People understand a piece they can hold, count, and compare. That is one reason physical metals still have a different feel from a balance on a screen.

Even if the fiat value looks small today, the form factor matters. Small units are easier to circulate if people ever need them.