I prefer to be very cautious with IDs. I have seen too many people call "definite" IDs on marbles based on a couple of photos and very little knowledge about other possibilities or variations that are out there. And I know from experience that the first tests returned are often the lowest scores in the class, usually because the student thinks they know far more than they actually do. Don't get me wrong here, that marble might be Alley, but I am not confident enough to go there "for sure", and I have seen Ravenswoods with similar patterns. Having said that, if there is a green tint in the base running along the red (first pic?) I would probably lean Alley too.
I also have not seen a Sistersville Alley like the one you posted. What do you know about that one?