Clay Disk ... AMS Horizontal (normal)
Clay Disk ... AMS Rotate 270 CW
Clay Disk ... Horizontal (normal)
pl. 123 ... Agora 23 P 21186 P 24275 P 19849 P 16811 P 15970 P 5442 P 6731 P 539 P 10513 Agora 23, 1930 Agora 23, 1931 Agora 23, 1929 Agora 23, 1933 Agora 23, 1935 Agora 23, 1934 Agora 23, 1936 Agora 23, 1937 Agora ...