While you're pondering the answer to that last question, I can tell you that in 1922, the Mint made silver dollar production it's top priority, causing other denominations to be produced sparingly, if at all, that year. Read the info in this web-page. Might give you a little insight into what went on in the early part of the last century. LINK
Let me ask the judges if we can accept your answer. Judges? (ding, ding, ding) Yes, ziggy, we can accept your answer. We were looking for Grant Memorial Commemorative Half Dollar, but we will accept Grant commemorative half dollar. Attaboy, ziggy.