You are offerding on what appears to be an unused spool of silk fly line. I am selling the container and line as a collector's item and not as functioning fly line, as I do not know the age, quality or functionality of the item. It looks interesting and in relatively great condition for its age. Container appears to be constructed of a bakelite or plastic type material. The label reads, "Crandall's Ashaway, Double Taper, 30 Yds H.D.H., American Finish, Pure Silk Fly Line, Waterproofed Under Pressure." If you are viewing this, I trust you know more about it than me! Please allow the detailed photos to serve as the primarydescriptor of the item. Low opening offer, . Please email any questions and I will promptly respond. Good luck!