No worries—the sig mystery can be oddly elusive. Since there are uploaded files in play, I can run a quick search to track down where that bottom-right sig appears and what it says.
Want me to:
Do a targeted file search for “sig,” signature, watermark, or bottom-right, and pull out the matching snippets with citations, or
Open the most relevant image(s) and show a close-up crop of the signature area so we can read it clearly, or
OCR the signature text and drop a caption you can reuse?
Tell me which route you’d prefer, and I’ll dive in.