Billboard, here's a blog about autumn fruits in Montenegro that includes a photo of a typical fig, along with this description, "The most popular fig in Montenegro is called 'Petrovača.' Don't buy hard green figs: a ripe fig is soft when you touch it!" Good luck with your new fig tree. https://www.balkanvibe.com/story/Autumn-Fruits-in-Montenegro/212
P.S. I'm a new fig hobbyist and find all these wonderful fig trees for sale nearly irresistible.