No date?from a online making of video:
I also remembered seeing the date in the film as well, but the coin in that screen cap above is odd for sure. Here's a real Peace Dollar:
But that film coin is odd because it doesn't appear to have enough room for the date at the bottom, yet it doesn't seem like they just cut it down, because "LIBERTY" isn't cut off at all on the top.
I definitely saw 1922 on those coins when I watched the movie.