Hmm! The only reservation I have with that observation is that the Kingsware glass shown seem to have much thinner walls/rims and also the walls near the base are much thicker in my vase than those shown in the Kingsware catalog. If the base were just ground and not polished I would be pretty certain it was Chinese as the rim is so off centre, BUT!
I do not know how consistent Skrdlovice glass would be if it were hand-made, but I agree with Scavo that it seems unlikely to be so off centre at the rim.
Ross