I guess this would be the marine of apple trees. Still clung to the tree in late November, still hard as anything.
This is great apple that we're eating at the moment. It's a good size, really sharp tasting and rock solid - no good if you have false teeth! A little like a granny smith I guess.
I've read that this was a really important apple in Victorian times as it keeps so well. I've got one of these trees planted at my parents house (about 8 years old) and here as a cordon (two year old), but even with two young trees we've only enough to last a few more weeks - no chance to test out their keep abilities this year then!