Late 18th century to 1800. Possibly American southwest use and evidently an evolutionary step in the development of the bowie. 14 5/8” clipped point blade with crisp crowned R maker’s mark. While the smith is unidentified, the form of the mark, a crown over a letter within a shield shape, is specifically Spanish. Variations include the crowned T mark of Toledo. Bronze cross guard with keystone form bolster. One piece horn grip well carved with a raised top panel and diced panel to the bottom. Good uniform patina. The blade smooth with glossy mottled gray surface.