I agree that it looks like staining of some sort. The "half moon" area without staining may have been protected at some point, such as with glue that subsequently fell off.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
























