New old stock vintage gift wrapping cord or package tie cord, non-stretchy, pretty silver, pink, green, metallic colors! The teal green is finer and a little shinier, the pink and silver are of the same weight and type of material.
There's a lot of cord here, one big cone spool in each color. I have no idea how many hundreds of yards that might be. Each spool measures about 9" tall, 5" to 6 1/2" in diameter. All this cord looks good, clean and nice, though it's about 40 years old!