Agramer overprint on piece with cancellation by the very rare so-called "mute cancel Triest". Detailed photo expertize Petry BPP: "in excellent condition. Island post admission stamps with this cancellation to arise from mailings, which the hospital ship "Gradisca" in the January 1945 from member the island occupying troops given to and to the arrival of the ship in Triest at a German service post office, probably in Udine, to the cancellation were handed over. Rare! "