Rockwell is the former name of Delta. It's changed back and forth a few times. Current company bought the Delta name. The Rockwell name is now being used by a Chinese company. Many of the classic Rockwell machines were made in Brazil, long considered the best woodworking machines of the day. Their cast iron frame 14" bandsaw set the standard which many others copied. Plenty of parts available. Manuals online. There are many different models, different motors, depending on the year but in most cases, something like a 70's Rockwell 14" bandsaw will be excellent. Value will depend on condition, which model and year, closed base or not, magnetic switch or not, lever tensioner or not, mobile base or not, condition of tires on the wheels, motor size, accessories, could be anywhere from $20 to $700.