What is this on my 8 reales 1785

Hello , I bought this straight graded Pcgs 8 reales and it appears to have a strike thru on it? Obverse and reverse. Is it a variety unlisted or ?? I would rather not guess myself π@TwoKopeiki. Or anyone what are your thoughts.
? Thanks
0
Comments
Missing metal (silver) is what I see. I do not see chopmarks of any kind. On the pillar I am not sure but again could be pressed down metal with some kind of tool.
Thanks for the response, but I donβt think Pcgs would straight grade the coin with what you are describing. ???
Looks like a pen is on it...
In honor of the memory of Cpl. Michael E. Thompson
I do not believe they would either.
Something created those lines / tool marks on the planchet. Must have been pretty deep to not be obliterated by the striking.
8 Reales Madness Collection
Thank you, !! At least now I have an explanation. Pcgs obviously believed something similar or it would not have straight graded..
You are the resident expert!π
Zooming out and looking at how it presents on the neck to a less severe extent, I was thinking those are just really bad planchet flaws
Planchet flaw
Gobrecht's Engraved Mature Head Large Cent Model
https://www.instagram.com/rexrarities/?hl=en
Given the linear nature of the flaw it was probably from one of the passes through the roller mill that turns the silver alloy ingot into a strip with the proper thickness. IIRC Swamperbob mentioned a step in the process to prepare the strip for stamping the blanks that involves cleaning and removing lamination issues from the strips. Also, improper annealing can lead to the planchet being struck without the necessary malleability to press out any remaining planchet flaws.
Here's a link to swamperbob's description of the lamination process
Thank you very complete and informative replies.