Image Item No. Description  7-4 (Inv)  Educational Box - Empty 1 Gear, 1973 Catalog: Sets: Educational & Dacta: Classic: Wooden Box Set  90-1  Super Set 1973 Catalog: Sets: Educational & Dacta: Classic: Wooden Box Set  507-2  Duplo Kindergarten Set 1973 Catalog: Sets: Educational & Dacta: DUPLO: Basic Set  508-2  Duplo Kindergarten Set 1973 Catalog: Sets: Educational & Dacta: DUPLO: Basic Set