Not to worry, I've had my share of senior moments.
I seem to remember that there are 4 essential elements to a legal note:
1. The absolute signature of the maker-
2. A specific amount of money-
3. A payee-
4. A time/date of redemption.
As in 1. The United States, 2. Shall pay 5 Dollars, 3. To the Bearer, 4. On Demand.