new old stock vintage sewing trim, huge spool of cotton lace insertion in french blue

Lovely vintage all cotton lace insertion in a soft french blue color (a pretty something blue for wedding things, or nice for decor trim, or clothes for antique dolls, or heirloom sewing dresses). It's 1" wide, clean and nice and in very good condition. I don't want to unwind this and mess it up, and I am not really sure how many yards there are here. Many, many yards.