Bunch of marbles - anything special here?

Hi - I bought a big bag of marbles, and plan to sell in lots. First I would like to rule out anything special that may be of more value. From what I can see, these are fairly common but seem to sell ok in lots. I did see some marbles on ebay in specific color combinations, or with multiple colors that were worth quite a bit more. Does anyone see anything here that may warrant further research? Also, accurate names would be helpful. Right now, I think I've got slag, swirl, corkscrew, and speckled. I saw lots of marbles like these called Akro Agate - are mine Akro Agate?

Thanks for any help!

 

A start

http://www.collectiblemarbles.com/Examples Home Page.htm

 

Thanks Terry, very helpful. Still can't quite tell if I have akro or peltier, or anything out of the ordinary...

 

I don't know much about them, but played with a ton of them when I was younger and lost a lot of them as I got older. Hahaha

I like the texture of the glass in number 8

 

Are your last 4 ceramic or glass?

 

The last 4 are glass. They do look a little like ceramic in the photo, but they clink and feel like glass.