[Swing_Thought]

Which of the hundreds of new currencies would you use?

(I doubt there would be hundreds.)

Obviously, I'd use the currencies I needed to use to obtain what I need. I'd keep my cash in currencies that I trusted, and if I needed something only available in another currency, I'd trade my preferred currency for that currency and then trade for the good.

But I suspect that, in time, there would be a few currencies that would be universally accepted.

[Toddsterpatriot]

Obviously, I'd use the currencies I needed to use to obtain what I need.

Your paycheck is in "JP Morgan dollars".

if I needed something only available in another currency, I'd trade my preferred currency for that currency and then trade for the good.

With a bank as the middleman? Doesn't sound very efficient.