I believe the answer is informational not to sure but I’d go with that one
Answer: it looks like A 4D
Explanation: hope this helps ^_^
Since this is the bass clef,
•G is on the bottom line,
•E is on the 2nd space and
•D is on the middle line.
It spells GED and I don't think that's a word but oh well ¯\_(ツ)_/¯
I hope I helped!
Many expert believe that engraving was originated By goldsmith to record their work.
Back then, it very common to engrave some sort of symbol that prove the ownership of the gold.\
hope this helps