From what little I could find this appears to be Haviland barbotine or majolica !!
That is a form of slip casting decoration !! Could find several pics of Haviland barbotine pottery but little info about the company history using that form of decoration !! I would send good pics to the Haviland collectors,, link above !! They may be able to give more info than I can find online !!
Thank you…will do!!