You may just as well toss a rock into the Atlantic ocean, hoping to nail a Halibut.
There are a lot of black figs.
If you can get a digital camera and take a few pics, of the leaves and fruit. and set a quarter by the fruit samples, "like the others do", it would narrow the list down a lot.
Find out who, on this list lives pretty near to you, and arrange to send a ripe fig to them when they're ready. It would cost a few $ but some folks here really know the varieties and it might be worth finding out what you've got
Also when you take the pic cut one open and expose the insides. Some black figs have pink insides, some amber some darker etc. It is all the pieces of the puzzle.
Good luck.