Fully restored 1940 International (IHC) D-2 1/2 Ton.Fully operational rust free 1940 international. International Harvester K and KB The International Harvester K and KB series are trucks that were produced by International Harvester, the first being the K introduced in mid 1940. In total there were 42 models, 142 different wheelbase lengths and load ratings ranging from 1/2 ton to 90,000 lbs. They are best known for their durability, prewar design in a postwar era, and low price. The followup to the K, the KB, was introduced in 1947, with the characteristic difference being a widened lower grill appearing like “wings”. Between 1947 and 1949 122,000 KB-1 and KB-2 trucks were sold. The KB series was subsequently replaced by the L series.