better pictures: what are your opinions about this autograph?

I sadly don’t have a good backstory to it. I got it as a gift in 2017 from a guy that got it from a music-store owner when he bought his first drums in his early teenage years, which must have been around 2011 +/-3 in a rural area in Austria, Europe.

I read stuff up about the three legit COA companies, but I wanted to check with you guys first to see if it‘s even worth taking it one step further.

to what year(s) could the picture or the style of autograph be dated? what are your thoughts about the added string?

(post nr. 2 - took better pictures outside of the frame.)