>>8328516 LB
One thing you aren't considering is UST coinage.
I did a dig on it a while ago, and there's something like $8B sitting in coin jars, bank vaults, etc.
Defaulting on coins from the mint is a completely different thing than defaulting on Federal Reserve Notes.
So let's say your post is correct, and FRNs either get replaced, or devalued and tied to gold.
What habbens to coins?
Worthless?
Devalued the same as FRNs?
Converted directly to a metal backed currency?
What logistics are involved in making change for less than a gold backed dollar, vending machines, car washes, etc.?
How long would that take to change?
What is the reputation of the Treasury worth defaulting on it's own coinage?
Total value if existing coinage converted directly to 90% silver coins is ~$105B (assuming $8B circulating and current price for junk silver.)
That doesn't seem like a huge price to pay for letting citizens feel like they won the lotto with their penny jars. It would even be a good stimulus for the economy.