Cash money. In this case a pile of antique US currency. The bills with the blue seals and serial numbers are Silver Certificates, reds are United States Notes and greens are Federal Reserve notes, which are what we use today. The $100 US Note is from 1966. The small-size piece of currency in the center is a 25¢ note (aka 'fractional currency').
Cash in hand, as opposed to checks, credit cards, debit cards, or goods available for barter.
Cash money is the shit that makes the world go 'round, my friend.