Im not sure if they did or if they ever made one or what, I have no clue. My best guess would be, coins last longer
Canada discontinued their $1 bill in 1996 when they introduced the Loonie (their $1 coin with a loon design). They knew that the Loonie would not be accepted as well if they allowed the paper dollar to remain in use. They were correct. Now the Loonie is very popular in Canada. So much so that a Toonie ($2 coin) has been introduced. The US Congress continues to think their approach - trying to convince Americans to use Golden Dollar coins while allowing the paper dollar to continue to circulate - will one day magically work. It has not worked in 29 years and it won't work. The paper dollar must be discontinued if the dollar coin is ever to be accepted in the US. (Just look to our north for all the evidence you need.)
Ah thank you. I have some bills from 1973, and I was trying to figure out if that was just before the stopped, or a good number of years before they did. And I totally agree. If the US wants people to accept the coinage (aside from coin people, and some others) then they'll have to stop the 1$ bill. Or, they have to stop making 1$ coins, and just use the 1$ bill.
The dollar bill and the dollar coin will not circulate together. (The Canadians realized this.) Given a choice Americans will keep using what they are accustomed to using - the dollar bill. It is hard to teach an old dog a new trick and Americans are used to dollar bills, not dollar coins.