Delft ?

Analysis:

• Tin-glazed earthenware Earthenware with a glaze to which tin oxide has been added to make it opaque white. Delftware produced before 1850 is always covered with a tin glaze. Read more Tin-glazed earthenware
• Hand-painted An important characteristic of authentic Delftware is that it is hand-painted. Printing techniques do not occur on this earthenware. Read more Hand-painted
• Unidentified mark Not all marks found on earthenware have been identified. It could be a ‘new’ Delft mark! But it could also be a mark that was not used in Delft. Read more Unidentified mark