It's a bit battered (bought cheaply in the market) hence the brown spots. Any ideas?
You can see the stone/seed is totally smooth, no fibres sticking out, unlike apricots/plums/peaches. Actually 2 stones/seeds in some fruit, and sometimes just one. Stone/seed has a flatter side and a convex side.
The skin peels off easily in large swathes. The inner pithy part around the stone/seed also peels off, less easily though.