Anything lower than $100 i've found that 100s are bitches to get rid of and break up I like to keep mine mainly 50s and a hand full of 1, 5,10, and 20s to mix it a little
thats US buddy When you spend your US money you'll be given change in Pesos so you always have some for the bus
It's a mix between coins and bills, If you do a search on this forum there was a thread created not so long ago I seem to remember that showed images of all denominations