2c on 35c green 'Provisional' postal stationery envelope (H&G B77a, overprint type 3) used with added pair 1918 2c on 4c scarlet 'Provisional issue (SG 422) tied by two strikes of large undated LEON 'Arms' cancel in violet. Addressed to USA, censored on arrival with printed black on white censor strip at right and CORINTO transit mark dated MAY 1918 and company arrival mark on reverse. Nice early use of the provisional issues in the first month of issue.