No.. Mint Marks were not Punched onto the Die after 1989. So it can't be a RPM. The 1992 has a plating issue. Pareidolia on the 2017.. Plating bubbles.
+3 Welcome to CT @Bryan Dillard. Thanks for posting the photos full image. Helps the eye sight of old folks like me. LOL
That makes sense to me also paddyman. Helps my eyes too MountainMan. Welcome to CT Bryan. All be safe