Such a beautiful shirt - incredible on.
It's a medium - a good fit for a UK10, possibly small UK12s too.And if you like your shirts oversized then would be good for UK8s too.
I know this sounds bizarre, but it is better suited to small - mid sized wrists! The cuffs are quite tightly cut so if you have thick wrists I think you'll struggle to get it on/ off.
In amazing condition. There is a small mark on the collar (see photo).