1920, registered airmail cover to Finland (folds, opend at two sides, minimal shortend) franked with 5p ornage, 15 p rose-red (single and pair), 1 m blue and sepia (two singles) all of the 1919/20 definitives and 5 m black, blue and yellow, FIRST ESTONIAN AIRMAIL STAMP, for prepayment of the Airmail fee for mail carried on the EMERGENCY FLIGHT from TALLIN TO HELSINKI, tied by six strikes ”TALLIN, EESTI 13.3.20” (First day of official usage), an additional strike, provisional boxed ”R”, striaght lien ”Kinnitatud” and triangular censorship marking alongside, at back ” HELSINGFORS, Helsinki 15.II.20” and TAMPERE arrivals. Signed.