Casting Pit A. Upper layer ... Scanned 2005 for the 75th anniversary exhibition and publication. 745 Horizontal (normal) ... 9 Apr 1937
Strosis I ... ΛΛ-4 745, 746 Section ΛΛ 111 Section ΛΛ 112 XI-64
Mixed ... D. Burr ... 601 793 ... 1937