a proposed last grading system, certification trademark, and association developed and promoted by John Kimball in 1842
used letters N, S, W, T, Y, P, R, K, and L for different “fullnesses”
Also Known As: Kimball Association
a proposed last grading system, certification trademark, and association developed and promoted by John Kimball in 1842
used letters N, S, W, T, Y, P, R, K, and L for different “fullnesses”