"Welcome to Marble Connection Trey"
Limiting yourself to posting 3 or 4 @ a time will help out immensely when making a proper I.D., w/ views of each side of the marble including any seams that are present. Sizes in fractions of an inch can be of great help also. Good pix and multiple views make for an easy and more accurate I. D. for you Condition is # 1. I do see a few different manufacturers, Alley, Marble King, Vitro, Cat Eye marbles etc... and some others but impossible to make a positive I.D. or any valuation w/ limited views, someone else will chime in soon,
again,
"Welcome"