This collectible set includes four tractors and is part of the ERTL IHC "66" Series.

  This is set #9.

It features 4 International Harvester tractors a 966 with 4 post ROPS, 1066 with deluxe cab, 1466 with 2 post ROPS and a 1566. The set was made in Mexico in 1991. It is factory sealed.