Royal Swan Staffordshire Earthenware Bowl

This is the underside of a circular ceramic bowl, likely a cereal or soup bowl, manufactured by Royal Swan in Staffordshire, England. The piece is constructed from cream-colored earthenware or semi-porcelain and features a scalloped or fluted rim edge. The hallmark on the center of the base includes a swan logo inside a red-bordered shield, explicitly stating 'Royal Swan', 'Made in Staffordshire England', and 'Ironstone'. It also bears a printed 'England 39S' and a hand-painted black 'W' mark, likely a decorator's or inspector's mark. The piece likely dates to the mid-20th century, approximately the 1950s. Regarding condition, the bowl shows significant environmental damage; there is extensive grey and black speckling across the glaze, suggesting mold growth or deep mineral staining from improper storage in a damp environment. There is visible crazing in the glaze and a prominent hairline crack or deep scratch running through the foot rim near the backstamp. Overall, the item is in poor condition due to the pervasive staining and structural instability indicated by the crack.