The EIII gleaner was built in 1968 only, just one years production. It was actually an early version of the model K gleaner. In light of the model E gleaner, the model EIII offered the first quick attach feeder house. Instead of having the two spring loaded head attaching pins, one at the top and one at the bottom of the feeder house, it carried the pipe configuration on the top of the feeder house that slides under the cast hooks that are mounted on the headers, then just one spring loaded pin at bottom. Other improvements included the in-cab console seperator clutch lever and grain tank unloading auger lever, two hydraulic levers on the console, bigger grain tank (66 bu versus 40 bu) and a longer seperating area. It was offered with up to a 13ft header or 3 row corn head. Same 27in cylinder, concave, raddle chain, 2fans as offered on the model E. It kept the 4 cylinder 226 cu in gas engine (D17 tractor type). The 1969 K gleaner improved to the GM 250 6 cylinder engine. There wasn't a model EII. The model E gleaner was built from 1962 - 1967. I think about 24,000 units were built. The EIII serial number started at 25,001, so maybe just few 1000 made that year at best because of retooling at factory. Without doubt, I know someone on this site that is a veteran dealer should comment as to the exact number builtIJ The model K in 1969 started over with serial number 1001. Great machines that were built to last 50 years+. A true testiment to Allis Chalmers quality. Own a piece of it, buy an old gleaner and teach your kids how to operate it!