Your item is from an independent art pottery,, not a factory or commercial producer !! That’s why the copyright symbol is on the bottom,, to keep others from copying their work !! This will be difficult to find since the studio could be in someones basement !! If they do not produce much or have a sales record you may be looking for years !! I will do some checking for you but chances are not good that I can find it !!
May I ask where you are and where you got this vanity jar !! Since you didn`t say what the size is,, that’s what I am assuming it is !!
Is the name on the bottom ELEY B. or is that an O after it ??