Help by identifying the version of a edited Enfold theme installation

Hello,
could you please help me by identifying the version of a edited Enfold theme installation and provide me the corresponding unedited version?

Context:
I’m working at a project in which someone had modified the Enfold theme files, didn’t worked with a child theme, hasn’t documented anything and on top of that he removed any infos about the Enfold version.
Looking in the changelog at https://themeforest.net/item/enfold-responsive-multipurpose-theme/4519990 and https://kriesi.at/blog I’m pretty sure it’s the Version 4.2 .

Because it lacks two features:
– added: new theme demo: elegant portfolio
– added: performance tab in theme options that allows you to improve your website

Which have been added in Version 4.3 but has following features:
– added: 5 new demos for creatives
– band demo
– dj demo
– freelancer demo
– visual artist demo
– gaming demo
which have been added in 4.2 .

My idea is to add the changes he made cleanly in a child theme (if possible) and update Enfold to the current version. So having the right corresponding version would be really helpful to identify the changes.

Greetings,
Andrew