hey @Kozmo70 great looking coin, will enhance any type set guaranteed. I'm going with AU. good luck man
If you look at the O-106 coin here, it has the „shadow“ below the 8 too, so I‘d say most O-106s are expected to have it.
I think it is a great-looking coin. Probably AU55. I might think it higher if it was in my collection (accumulation.) Nice coin! Congrats!