Matinas are early ones, taste better than Early Girl I think, and rather small sized. They bore a lot of fruit, starting early and producing tons of tomatoes right until fall. Another thing I like- no green shoulders.
In this picture the Matinas are the smaller ones on the plate in the foreground and on the meat platter. See- no green shoulders!
Any of the weird colored ones- like purple or black- I have trouble telling when they're perfect for eating.
Karen