It was quite the common thing, back in the day of the "rattler" for many dealers (and collectors) to try and get upgrades on coins that had big jumps from one grade to another. Just like a few still do today.
So it's entirely possible that a rattler was reholdered, although I have no idea how long they've been adding the 0.
So it's entirely possible that a rattler was reholdered, although I have no idea how long they've been adding the 0.


















