Where does “пјенез” come from?

пјенез (Serbo-Croatian) comes from Proto-Slavic pěnędzь, from Old High German phenning, from Old High German phendi(n)g.

пјенез (Serbo-Croatian): money

Definitions

Step	Language	Word	Meaning
1	Proto-Slavic	pěnędzь	coin, money
2	Old High German	phenning	a kind of coin
3	Old High German	phendi(n)g	—

пјенез — Etymology, Origin & Word History | Etymology Explorer