it looks like there is a 1 8 overwrite above the date please check the scan and let me know what you folks think Prob just coincidental enviro damage
The coin has a lot of environmental damage...and I think it's just a coincidence of how the damage has formed.
I think you got it right. Just coincidental enviro damage- an optical illusion. Many's the time I've seen "phantoms" on some of my more porous detector finds.