School chart on mussel anatomy

An old school chart illustrating mussel anatomy. The chart is made of strong paper with brass corners and shows patina, indicating an age of over 100 years. It is approximately 100 x 69.5 cm large and has card number 30. The chart has a metal hook for hanging. The school chart contains a Danish description of animal anatomy. The chart is decorative and can be used to learn more about the anatomy and biological functions of the mussel.