The Royal mint 10 sterlings

[Enzo]

Buonasera, cosa ne pensate di questa? Grazie a tutti

[Chris Perkins]

As there is no automated way of translating, I think you'd be better off posting in English Enzo.

That appears to be a Freddie Mercury silver proof £5. One of the Royal Mint's 'Music Legends' series. It might even be the one they are currently peddling.