The IMF has about 3200 tonnes of gold supposedly and this loan would probably mean they had to put up the whole 3200 tonnes as collateral as this is about where the per ounce price of gold is right now. I doubt 400 tonnes of gold would meet sufficient collateral requirements for $100 billion dollar loan. Of course this is 2009 and we just saw many people get credit to buy homes they couldn't possibly ever afford and where all the legit qualifying credit criteria normally used were thrown out the door by those promoting Fannie and Freddie like Barney Frank, Nancy Pelosi and Obama himself so nothing would surprise me anymore, meaning maybe no collateral was required except the cost of starting up another printing press or pressing an electronic button.