Probably the most common Marble King they ever made. I played with these in the 1950's. It was the only marble then that I ever heard a name for. Then along came the Cat Eye's.
I warned about cut lines. They can help but not totally reliable. You cannot identify big numbers of marbles accurate by cut line shape alone.
Several different varieties of Bumblebees from MK through the years. These are older ones. Sizes from tiny pee wee to one inch.
Colors with yellow can be different shades of purple, browns, dark blue, and black. Some of the newer ones are clear or translucent base.