Ordinarily the bases are marked like that if they are crafted separately of Italian marble !! Cannot see how these are done from the pics !! I would bet they had a paper lable at one time and are imports for sale here and in other countries !! However,, if that is so,, they are very well done !! Beautiful faces,, excellent craftsmanship from what I can see !! I would guess as a value,,around $30. each at that size and without knowing maker !!