Dear pompe72,
ੴ is not an alphabet but a combination of a digit, an alphabet and a geometric curve.

੧ is the digit "1" in Punjabi, called "EKK"

ਓ (Oung) is an alphabet from Gurmukhi (Punjabi) script.

Third part is opening curve above ਓ which is a geometric shape and is called "Kaar".

Therefore ੴ is pronounced as Ekk-Oung-Kaar. I did the following posts on all three with detail,

https://steemit.com/sikhism/@mathworksheets/sikhism-lesson-1-ekk-oung-kaar

https://steemit.com/sikhism/@mathworksheets/sikhism-lesson-2-ekk-oung-kaar

https://steemit.com/sikhism/@mathworksheets/sikhism-lesson-3-ekk-oung-kaar