Image Item No. Description  2001-1 (Inv)  Three-in-One Play Set 3 Parts, 1998 Catalog: Sets: Primo  2071-1 (Inv)  My First Plane 1 Part, 1 Minifigure, 1999 Catalog: Sets: Primo  2078-1 (Inv)  DUPLO Baby Trial Size Set 4 Parts, 1996 Catalog: Sets: Primo  2089-1 (Inv)  Stack 'n' Learn Gift Set 23 Parts, 1 Minifigure, 1997 Catalog: Sets: Primo  2168-1 (Inv)  Rattle 2 Parts, 1998 Catalog: Sets: Primo