A Union Special chainstitch machine is a type of sewing machine manufactured by the Union Special company whos history dates back to 1881 operating out of Chicago, Illinois. Union Special is highly regarded for producing high-quality machines, including those specifically designed for chainstitching. The Union Special 43200G is highly regarded by denim enthusiasts and manufacturers for its ability to create the distinctive chainstitch used in hemming jeans and has been used by iconic denim brands such as Levi's, Lee, Wrangler & Carhartt since the early 20th century. With the Japanese denim industry boom in the early 80's the Union Special 43200g became highly sortafter as the Japanese went to extreme lengths to create the perfect pair of jeans with extreme attention to detail and the heritage of Levi's etc. The Union Special 43200g is an extremely rare machine with only a handful operating around the world in denim manufacturing facilities and specialty denim retail stores. A well maintained, original machine can sell for anywhere above $5000USD.