Treasury tag
From Wikipedia, the free encyclopedia
A treasury tag is an item of stationery used to fasten sheets of paper to each other or to a folder. It consists of a piece of string, typically around 6-8 cm long, with two shorter pieces of string reinforced with metal and set at a 90-degree angle at each end. Treasury tags are threaded through holes in paper made with a hole punch.
There is an image of treasure tags here: here