Posted By:
Rhett YeakleyJeff, agreed. We have both been wondering the same thing.
There is at least one cropping difference in the 1921-24 series that has yet to be catalogued. One of the croppings is likely a 1922 and the other a 1923-24 but short of determining which one is tougher I don't know how one would know. I have shown it before but it has been a while...

-Rhett