It’s the Penguin Classics Deluxe edition, found it at Barnes and Noble awhile back.
It’s on Amazon here too The Divine Comedy: Inferno, Purgatorio, Paradiso (Penguin Classics Deluxe Edition) https://www.amazon.com/dp/0143107194/ref=cm_sw_r_cp_api_i_lYdqFb0ZN51Y2