Levante Block Penetration. London: Jon Martin [?], ca. 1937. Hardwood block with hole at its center is threaded on a rope held at each end by spectators. The magician then passes the block through the center of the rope with no cover or hesitation. Mechanical device concealed in block. Maroon finish with black accents. Block a 5" cube. With Charles Larson?s handwritten notes and diagrams. Finely made. Larson?s notes and instructions indicate that this block is likely to have been constructed by Jon Martin, though other contemporary notes included with the prop mention the names of Willmann and Paul Clive.