- Medium
- Graphite with smudging on transluscent ivory vellum
- Dimensions
- Upper left: 58.5 × 58.6 cm (23 1/16 × 23 1/8 in.); Upper right: 58.3 × 58.2 cm (23 × 22 15/16 in.); Lower left: 58.3 × 58 cm (23 × 22 7/8 in.); Lower right: 58.2 × 58.3 cm (22 15/16 × 23 in.)