Description
Factory Sealed 1979 MB Big Trak Transport Accessory Dump Trailer #4956 New MISB
Up for sale is an exceptionally rare, factory-sealed original Big Trak Transport Accessory Dump Unit (Model No. 4956), released in 1979.
Designed as the exclusive motorized add-on trailer for the legendary Big Trak programmable vehicle, this unit plugs directly into the vehicle's rear accessory port and mechanically dumps its payload on command via the keypad OUT sequence.
While loose or opened boxed units surface from time to time, finding an example preserved untouched under its original manufacturer shrink wrap after more than 45 years is a genuine rarity for vintage robotics and toy collectors.
Condition and Packaging Details:
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Factory Seal: Fully intact original shrink wrap. No major tears, splits, or resealing. Plastic remains tight against the box.
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Box Condition: Clean corners, rigid edges, and solid box structure with no crush damage or sagging. Colors and vintage graphics remain bold and un-faded.
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Internal Contents: Completely untouched and preserved in original factory state:
Motorized Transport dump trailer chassis and cargo bed
Original connecting cable and Big Trak hitch plug
Original factory decal sheet (unapplied)
Original operator manual and paperwork
Factory inner cardboard packing inserts
Note: Requires 1 "D" cell battery for motorized dumping function when linked to Big Trak (battery not included).
Collector Significance:
Most 1979 Big Trak accessories were opened, run heavily across carpet, and subjected to cracked hitch plugs, peeled stickers, or battery compartment corrosion over the decades. This box survives as an authentic time-capsule piece, suitable for an acrylic display case or high-grade vintage technology collection.
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