Champions?

[Marbleized]

Hi Everyone,  I apologize for any mistakes and irritations that I may cause, in advance.  I'm just getting into sorting and identifying the marbles that I keep purchasing (mainly because I liked how they looked).  The answer to my question is probably obvious to everyone, but here it goes . . . Are these Champions?  They have a lot of dings on them like they've been banging around in a bag too long.  I've read somewhere that Jabos can be fragile, too, so that might be my second guess.  I just love that they are so full of swirls.  Thanks for your help! I'm attaching 4 pictures of different views of a few. I've quarter-turned them front to back. They are about 0.61" to 0.62". Thank you!

[wvrons]

100% Champions. 

[Marbleized]

Thanks! (I was thinking that the blue one looked like the bicentennial one that I saw on another marble website.)

[wvrons]

Very good !  Those four are usually identified wrong 90% of the time.  Once you have them in hand and compared to others, the difference can be noticed.  A good set to learn from and teach with. Champion had a few others from this same time frame that also get confused with older WV swirls. 

[Marbleized]

They looked too shiny to be the older ones so my first guess was the Champion brand since they have produced marbles into the 21st century (?).  Thanks for your help!