Black tomatoes

My tomato has the colour of a dark plum, do you know what kind they are? They can be black krim (Russian ) or Black Zebra, The family thinks they are sweeter than normal tomatoes. Thanks Glenice Van Polanen Petel
The deep red-purple, almost black, green-shouldered variety of tomatoes known as "Black Krim" (Solanum lycopersicum) originated in Krim, Russia, near the Black Sea. This heirloom tomato grows on 4- to 7-foot vines, producing numerous 6- to 12-ounce globe-shaped fruits. Fans of the "Black Krim" rave about the rich, salty flavor of its fruits.
‘Black Zebra’ is a natural and stabilized heirloom cross between a black tomato and Green Zebra, and its size and shape are akin to Green Zebra.