Researcher has it right there never was a skeet grade. It was a type of gun. Before 1940 you could get a standard skeet, a tournament grade, a trap grade and a custom built grade. After 1940 the trap and custom were discontinued, the tournament had been dropped in 1936.In 1940 the deluxe grade replaced the trap grade and the custom grade. During the 1940's and 50's trap, skeet, duck and field guns were types of guns and could be had in the deluxe grade also. It was discontinued in 1950 and the custom grade was reintroduced. As far as Ned's book goes its wonderful but it is wrong when it calls skeet and duck as a grade,
they were types. AWC