Position 45 Ai Aii B c May 1920 Dec 1935 May 1920 July 1932 Ai Ai 44 45 Ai Ai 56 57 Sep 1931 AB July 1924 Sep 1926 (fiscal) AiB AiB AiiB July 1932 Jan 1934 Dec 1935 Ai Ai July 1927 Feb 1930