The Lionel 6651 USMC Cannon firing car was the last military item produced by lionel in set form.  This piece was present in only two uncataloged sets; Alden 5615E and JC Penney 3734.

The car is olive drape in color with white heat stamped lettering present.  Four [4] silver colored wood shells were present that can be fired from this unit.  The cannon can be elevated and swivel 360 degrees in relation to the flatcar.

Named "Big Bertha" by collectors this car looks great with any land, space or air collection.

Any 6651 found in quality condition should be purchased immediately.  Many replacement shells exist for this item which are nearly impossible to tell from the originals.