You can literally go to the bank and have them order you stacks of these to exchange your money for. They still make them and the only reason they are so "rare" is people save them instead of spending them. But you can literally go to the bank right now and say order me a $1000 stack of $2 bills and they will do it. I went to the mint in Washington DC, I think, and got a full uncut sheet of 2 dollar bills!