The Turbo Missile Launching Car No. 3309 was frequently found in uncataloged sets in 1963 and 1964. It often lacked the extra storage for the spare turbo missile that is found on the No. 3349. The other distinguishing difference is that fact that this car came with either AAR or Arch Bar trucks that would have either one or both fixed couplers. The D variation would have an OLIVE DRAB colored chassis and was made for set No. 19334 and was sold by J.C. Penny during 1963-64. This is the hardest variation of this car to find.