Metal Clothes Rail, double bar on castors. (Cottingham HU16)
It’s been folded away in storage so I’ve included a photo of the closest type to it I could find for sale online so you can see what it looks like when assembled. It has a middle and a top rail and is suitable for separates as you’d only be able to hang something longer on each end of the top rail as it overhangs slightly.
This offer has been gifted to someone and is no longer available.