This is a Vintage Collectible 3/4"  .846 Inch Glass Marble Yellow Swirl Near Mint. I say 3/4" marble, but my digital caliper says .846, which is like 3/4". I am not an expert on marbles and try to research on eBay marbles that may be similar and go by the information I find, but it is only my opinion and you experts can be the judge by all the pictures provided and can ask any questions. I have other marbles listed and all my marbles are sold as is and pictured.

I am not an expert, but I think in near mint condition. Do look at all the pictured and make your own grade of this neat marble and ask any questions you may have. Sold as you see pictured and picture 6 is without using the camera flash. 

I do combine shipping and I am very quick to ship as I ship same day or first business day of receiving payment. All marbles will be shipped in a bubble mailer insured and on multiple marbles shipped, I will wrap each marble in paper to protect each in hitting others.
AS I SAY I AM NOT AN EXPERT AND MAYBE THE MARBLES WITH THE INDENTS ARE HANDMADE, BUT AGAIN I AM NO EXPERT SO JUDGE FOR YOURSELF.