Vintage Sasheen medium blue ribbon 250 yards New

This roll of Sasheen ribbon is Medium Blue, #10. It’s 7/8” wide by 250 yards. This ribbon is new and still factory sealed but it’s actually vintage from the 1960s. The outer layers have aged into a purplish hue, please see the photos. Was purchased for use with the 3M Sasheen bow maker S-72. Any questions, please ask. Thanks!