The first photo is an example of a dropped filling error from sullivannumismatics.com. my coin has dropped filling errors on obverse and reverse. Above liberty is a "Y" and a T and L on the bust. All informed opinions welcome.
In my honest opinion.. No dropped letters on your cent. Dropped element error is very rare to find.. Not everything you see on your coins are dropped elements.
OP is posting images from the aforementioned website https://www.sullivannumismatics.com/information/articles/strike-through-error-coins there is no full slab image to confer what the authentication was, if any at all ... and perusing through all of their quarters there was no current example.
I did find one authenticated example on the internet, not the same as posted above https://forums.collectors.com/discu...or-listed-on-holder-of-dropped-letter-quarterhttps://forums.collectors.com/discu...or-listed-on-holder-of-dropped-letter-quarter in other examples i've seen, the letter is usually FULLY formed into the surface. and of course not a "kinda looks like a letter" per this article https://www.coinworld.com/news/precious-metals/die-fill-responsible-for-errors-seldom-found.html @Fred Weinberg @mikediamond
Could the filling have fallen out prior to it being fully formed? It looks like an incomplete T that has fallen out prior to fully forming. The letters are comparable in size. Does it have to be slabbed to be authentic?
Yes, the compacted material could fall out prematurely, but I don't agree with any of the specimens, including the "Sullivan" specimen, being a dropped element since they are in segments rather than one continuous piece. These coins could have picked up any amount of dirt or grime while in circulation, and this is nothing more than pareidolia. ~ Chris
looking at the T and the squiggly line, this is how they line up. but unless the squiggly line is incused .. you could infer that is it kinda, somewhat the same ... or you can cast aside imagination and say nope ... might I also add .. it really doesn't fit. it is slightly too large in a few spots. and if it was smooshed at all, it would fit even less. plus if it was compacted it would be at the bottom of the element before it dropped out, not squiggly all over. you can also throw all the "but ifs" at it .. just don't forget to include the "but if it's not at all" but then I'm no expert ... @Fred Weinberg @mikediamond