PMs?
I keep just enough to bribe the boarder guards....
You can bet those border guards won't agree with the MMT "economists" who claim PMs have no intrinsic value.
It's funny, but also not so funny. People trying to escape the Nazis and other authoritarian regimes actually did do this, and also sewed their jewels into the lining of their coats etc so they'd have some assets when they got to freedom. So if you're gonna stack for this purpose my advice is... also learn to sew.