This is an extremely rare Chamberlain 2000 model, 4WD loader. Powered by a 112HP Perkins 6-372 (a slightly bored-out 6-354), it was produced from 1971 to 1980. Only about 250 of these loaders were built in total. It weighs around 10 tonnes, and was fitted with a 2 cu yd bucket as standard. It used an Allison transmission, Girlock disc brakes, Vickers hydraulics, Twin Disc axles, and it was a good performer - to the extent that Cat put out a "competitive machine" brochure on it, comparing it to the Cat 930.