Looks like a Planchette flaw.
It looks so small...you must have some monster mitts. 😃
Yeah, it's a cracked planchet and may have been net graded due to it as the obverse looks better than AU53.
Got any reverse photos?
With the right write-up and promotion it might bring a significant premium as an "error". It could also be promoted as a "white holder" ANACS coin.
a small board supported on casters, typically heart-shaped and fitted with a vertical pencil, used for automatic writing and in seances.
"the planchette jerked and skittered to the upper left-hand corner of the paper"
its got a decent grade as well, i like
Looks like a planchet flaw to me too.... Nice coin. Cheers, RickO
Here are some better photos including the reverse. Thanks for the input 👍