I've hit a bottleneck again, as I can't find this tie in my closet to take down its particulars. If memory serves, it's made of Dralon polyester, and a prodigious amount of it. Such a generous serving of a petroleum-based textile could only have originated pre-Energy Crisis '74. And that brown....!
Update: I found the tie! It is "Distinctively Styled by Lancashire" of Imported Trevira. (Not Dralon... memory did not serve.)