The "Hamilton's Invaders" toyline was produced by Remco Industries Inc. in 1964. Conceived and marketed by Remco on TV during the early 1960s, inspired by the popular giant insect film genre at the time. The insect toys worked via pull-string motors and were for use w/plastic soldiers and motorized artillery and helicopters. Remco also produced a bug-eyed helmet and grenade pistol which children could wear for total immersion in the play-acting scenario. Original Remco cardboard shipping box has obvious and heavy wear w/moisture/tape staining and repair/reinforcement added to interior. Just Good. Comes w/7.5" long and 10.5" long spring motor insect toys (the 10.5" insect - "Horrible Hamilton" - was the largest insect produced for this toyline); three 3.75" long free-wheeling molded plastic insects; 9.5" long "Hamilton's Invaders Science Fiction" tank that shoots (w/figure in cockpit); 6.75" long helicopter w/wind-up rotor; pilot figure in cockpit and two small bombs for dropping on insects; large die-cut folding "Hamilton's Invaders Cave"; and nine soft plastic Army men. Missing just one helicopter bomb and instruction set, rest is complete and working. Exc. overall. The toyline was ended after selling for a single season, so all pieces are now highly sought after.