vintage creamware earthenware pottery pudding mold w/ grapes design

Vintage creamware pottery food mold with unusual makers mark, please see photos. We know very little about the age or origins of this piece, though it's clearly been used in a kitchen. So it's a functional item, not just a decorative piece!

This has a number of chips and glaze chips, inside and out. The small dark spots to the finish are mostly discolored glaze chips and pops.