The image shows two isometric cubes labeled as (1) and (2). Both cubes have six faces, each filled with a different color. **Cube (1):** * Top face: Red * Front face: Pink * Right face: White * Left face: Null * Bottom face: Yellow * Back face: Light Yellow There's a diagonal line running through the cube, labeled 'Ochre'. A small 'x' is present on the bottom left corner. Below the cube, the text reads 'Orange hidden'. **Cube (2):** * Top face: Purple * Front face: Light purple * Right face: Light brown * Left face: Blue * Bottom face: Green * Back face: Light green Below the cube, the text reads 'Brown hidden'. At the very bottom of the image, centered, is the text 'Fig. 100'. The image appears to be a vintage illustration, possibly from a scientific or art-related text, demonstrating color relationships or visual perception.