I've been doing research on old and foreign coins ever since I turned up my purse o' booty. With countries splitting up, reuniting, or even dropping off the map entirely year to year, decade to decade, the value of a seemingly worthless coin can significantly accrue in a short time. I'm wondering if this recent situation in North Korea could mean, for example, my little 1999 S. Korean won (worth about ten cents)'s price could skyrocket overnight.
I am willing to bet if you somehow had North Korean currency, that will skyrocket.
Especially if their is reunification or something. Old S. Korean currency will hold president over N. Korean.