This is a Winchester Model 1894 tool in 50 Winchester Express Caliber. This is the Mac Daddy of Winchester Reloading tools as they are quite a challenge to acquire one of these! Winchester never built too many Winchester Model 1886's or Hiwalls in Caliber 50 Express and so reloading tools are scarce compared to most other calibers. The tool is mostly grey with a fair amount of original blue in protected areas. The die is clearly marked "50 WIN EXP." The body of the tool has the Winchester address, Model year (1894), and February 13, 1894 patent date.