@sbg, nothing stands out to me that this is a strike through, despite your instructions for where to look. I do see uneven toning, but that is unrelated to the striking process and most likely from chemical or environmental exposure.
"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