You are bidding on all 9 of the marbles that you see in the pictures. I used Google Lens to try to figure out what these are and I kept getting results telling me that they are Akro agates - the "Indian blanket" variety. I really am absolutely NOT a collector. I am not knowledgeable in this sort of thing at all. I normally sell kitchen and home-goods type stuff. I don't deal with this sort of thing - YOU, the buyer, NEED TO LOOK AT THE PICTURES to determine condition and make assessments.
There's a reason I'm starting this auction at $4.95.
All of the marbles are slightly different sizes. The micrometer that I use is pretty accurate and it reflects a range of 12.9mm to 14.5mm. One of the smaller marbled is slightly flattened on opposite ends.
LOOK AT ALL OF THE PHOTOS!!!!