Holdings
6,17.1910; 17,20.1921/22; 18,2.19.1922/23; 20,13-20.22.23.1924/25; 21.1925/26; 22.1926/27; 23,1-20.22.1927/28; 24,9.10.13-24.1928/29; 25,1.2.4-9.13-24.1929/30; 26,1-18.1930/31; 27,7.8.11.13.14.18-23.1931/32; 28,1-3.6.8.10-15.17-19.21.22.1932/33; 29,3.12-15.19-22.24.1933/34; 30,2.8.9/10.13.17/18.1934/35; 32,4.7.11.15.16.18.1936/37; 36,15/16.21/22.1940/41; (00=22,2.1926/27.)