Originally Posted by BarbiJKM

The teller at my credit union was ecstatic to see the small batch of $1 NAs I deposited this afternoon (and I am USING the rest of the order), because she said they hadn't seen them yet, that customers were ASKING for them, and that my deposit had made a LOT of people happy today!

So not all deposits are going directly back to the federal reserve; some banks and credit unions are circulating them faster than any individual FT could (unless they own a laundromat or vending machine business).