Ironlord, I have to say that I am leaning towards a possible fenton piece. The color and and design looks like a colonial blue thumbprint bud vase, made in the mid 60's. As i have stated before, fenton didnt start stamping their pieces until the mid 70's which could explain why your piece isnt marked. As for fenton having smooth bottoms, that is ususally the case, but not always. There are some patterns that are not smooth on the bottom, and from what i have seen with some research is that the thunbprint pattern can have the same bottom as your piece. Keep doing some more research.