This is an Italian majolica vase from the ceramic tradition of Savona (Liguria). The base bears the inscription "Savona"—here in the form of "Sara Savona," where "Sara" is presumably the first name of the decorator and does not refer to Maison Sarah Lavoine.
Savona vases of this type are characterized by:
lush, sculpturally applied majolica flowers and tendrils monochrome (blue-white) glaze Hand painting with fine engraving and relief work classic rounded shape with narrow neck and side handle
This jug is in a used vintage condition and has slight chips - see photos Weight: 850 g Height: 20 cm diameter 17 cm