There are some lavender Alleys and Vitros which are considered harder to find. I don't always recognize them. I'm wondering if this might be one of the good ones. But I wouldn't have a clue as to value. In general value for vintage marbles is measured in the cents.
To me the one which is standing out the most in this group is this one, but I don't know what it is. I'd guess Vitro.
This is also interesting to me, but again, I don't know what it is.
This one is a 1940's Vitro Conqueror. Being a larger size adds value. But since the basic Vitro Conqueror is considered a "common", I wouldn't expect a large one to be worth more than $5 (if that) even in mint condition.