Winchester did not use "Skeet Grade", either in 1933, 1936, or later. The first mention of the "Skeet Gun", Tournament or Trap grade is the August 12, 1933 price list. The June 21, 1932 price list made no mention of the Skeet Gun. However, the "Skeet Gun" folder mentions skeet championships won by Model 21 shooters in 1932. At the same time or a little later, the Standard Grade was available with skeet chokes. In the January 2, 1936 price list, Skeet Guns were available in Standard Grade, Trap Grade, and Custom Built Grade, and the Tournament Grade's short run had ended. Skeet Grade is not mentioned, nor was it mentioned in any later lists or catalogs that I am aware of. Cody, Schwing, and Madis make up their own terminology, not all of which is in synch with Winchester catalog offerings. The 1933 "2000 Proof" Model 21 catalog is the first to mention the Skeet Gun.