This is my cousin, Jakov Navon. On the back of the picture it says: 'To my dear cousins, so that you remember me always, Zak'. I don't know when or exactly where the picture was taken. My guess is that it was taken before the war in Pristina.
After the war, Jakov, his parents and siblings made aliya, and Jakov died in Holon, Israel in 1999.