Big Green tomatoes

[Clawdy]

Bought two tomato plants at a charity stall so no names on. One is now full of cherry toms, but the other has large, heavily ridged hard green tomatoes. Don't think they will ever go red. Any idea what they might be?

Merinda possibly?

Just checked and they look very similar to Merinda, thanks Buzzardbird . Wonder if I should just leave them, in case they turn a bit redder.

I think they are mostly a green, but you could put one in a box with a banana and see what happens.

Right, will try that!