Could we make a slight modification to the category:
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1950-1959

Other neighboring rookie categories have the distinction between "Graded" & "Non-Graded"

Example:
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1960-1969 > Graded
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1960-1969 > Non-Graded

but the 1950's decade does not.

So instead of this:
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1950-1959

could we have this:
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1950-1959 > Graded
Sports Memorabilia & Cards > Trading Cards & Stickers > Baseball > MLB > Rookies > 1950-1959 > Non-Graded

Thanks for your time and consideration.
Glenn (asdcore)