Poster Comment:
$8.5 Trillion in gold, using today's market value.
As of 2008, the entire supply of money in the world (broad money, i.e., global M3, meaning cash, consumer-account deposits, checkable accounts, CDs, long-term deposits, travelers checks, money-market funds, the whole enchilada) was estimated to be just under $60 trillion.
Given the insane money-printing (and digital money-creation) by the various central banks around the world, it would not be unrealistic to guess that current total money now equals $100 Trillion, if not more...
What this means is that, by 2008 supply, gold is undervalued by a factor of 7, and should be at ~$11,200/oz.
If we estimated a total money supply of $100T, then gold should be 11.76 times higher, or ~$19,000/oz.
Going by the more conservative 2008 number, and historical ratios of gold to silver, silver should be @ $~630/oz.