When you zoom in on the pictures, that is rust. HGR's warehouse has a leaky roof. It wouldn't surprise me if it sat under one of the bad leaks for several years of saturated moisture either in their warehouse or an old shop where the lathe came from.
They also have a Axelson I would love to have, like I need another project. All the handwheels, levers on the carriage are broken off, typical of HGR handling.