Just after looking at the letter and the studying old languages a lot, this sort of looks like a Z to me? We don't know though just checking? Seeing for global cross references as Z is symbolic as will show, if it does?
From a lot of study since young, we are confused with Arabic interpretation all over...Basically isn't a few of the letters meant to be pronounced:
Za= ﻉ
Zda = ﻍ
Ja = ﺫ
Zh =ﺯ
You see currently many languages are so muddled..
Yet all stem from the same and since that then makes far more sense overall, would that be understandable?