What caused this? Looks mint made error, planchet related, Not post mint damage. Am I correct? Does this specific error have a name? The fact that the rim denticles are mostly intact in that area is interesting to me. What say you, error collectors? I have looked at maybe 30 1944-S One Centavos, and I have not seen another coin with this error / problem. By the way, this coin is straight graded by PCGS. I didn't notice this when I but a very token bid on the coin (I need the Type). Low and behold, everyone else saw it, so I won the coin, LOL.
It looks like a struck-through, obscuring the area, maybe some piece of rag. Look at how it lies over the denticles, too. You won't find another as this didn't come off the die.
It is not unusual. Mint error grading costs at least $35 (up to $300 guide value) and $70 (above $300 to $10k) per coin while economy is $23 (up to $300) and regular is $40 (up to $2.5k). This error does not add much to the value so it is not worth paying the extra grading fee and waiting longer for the grading process. And if you don't send something under mint error service, PCGS will not put "error" on the label (there was a post within the last year on the PCGS forum where someone had a more dramatic error in a normal holder like this).
No it is not unusual. This is also a very minor struck through grease, and might actually hurt the value more than help it as an error.
This is “caved” in the field as well as just plugged in the lettering. There’s depth in the field. Grease with impurities will coat the field, it won’t depress it.
I think you have to mention and pay extra for the struck through designation. Of course they should just do it for the regular grading fee, which is already too much. If it straight graded at least it's not PMD. Struck through cloth? Like a mint workers glove? Or cleaning rag? Not sure I agree with MS 63 but I don't have the coin in hand or with bright light and magnification, but I am lower. So good grade and the error too.