4 x 10 Mrd (Billion). Mark, 15 September 1923, four variety, KN 8 digit, set A; KN 6 digits FZ and BZ brown FZ at the; KN 6 digits brown FZ and BZ black FZ A; paper without colouring and without fibre core. Rosenberg 113 a, b, c, d. Condition I and I