Where does “Ͷ” come from?

Ͷ (Ancient Greek) comes from Phoenician 𐤅, from Egyptian 𓏲.

Ancestry of “Ͷ”, step by step

Step	Language	Word	Meaning
1	Phoenician	𐤅	waw; {{l\|en\|waw}}
2	Egyptian	𓏲	—

Ͷ — Etymology, Origin & Word History | Etymology Explorer