Looks like it just got smashed to me, aka PMD Do you have a reference online of a 62 year old cent that would have an OverDate from one of the primary Error websites ?
I think I see a little die deterioration that may be confusing you, plus the date suffered a pmd hit. But its not a LD/SD.
Damage and wear. Because of this, it is next to impossible to confirm any attribute unless it is overwhelmingly prominent…imo…Spark
One of the tell-tale signs of a large, verses and small date, is the curve of the nine and that doesn't show any signs of change, so No, it isn't a small date over a large date, IMHO.
Rick didn't mention the 1960D he showed also has a RPM D/D (green) .At least one bag was filled before someone noticed. The value started high and then dropped over time. IMO