Bullion trim made with real metal wire woven around thread. The feel is fairly stiff, but for garments where longevity and authenticity are paramount, this is the best choice, as the metal will oxidize over time to an antique-looking patina. This braid's just over 1/2" (13mm) wide, in bright gold and pale silver. Made in Pakistan.
We also have a very similar trim, also called Flint, in a narrower width here.