Dak
mentat
Here's the article I'm referring to; read the section "Capital vs. Money."
http://en.wikipedia.org/wiki/Finance_Capital#Instruments
So basically it says capital can take the form of shares or various other financial instruments (most of which are nothing but shell games for bank/lender profit). Regardless of the form it takes, the value is still going to be denominated in the local currency, and dependent on the strength of the economy as a whole/the currency.