For salehere we have a spoolof vintage Belding Corticelli #5555 (brown) silkwinding thread. The spool is 10 yards, size D.Though rarely seen on classicAmerican rods, this larger size of thread was commonly used by Europeanrodmakerssuchas Hardy and Pezon et Michel. It is unused new-old-stock in like new condition on a wooden spool.