Antique Dedham Pottery Tea cup?

is an old piece of Dedham pottery possibly a Tea cup bu tI am not sure. It has a double handle. T is no lid. This piece measures 4" wide at it's widest point ( not including handles) and 2" tall. This piece is in mint condition with no chips, cracks or nicks. The only thing i can find wrong with this cup is a small area on the rim about 1/4" that appears to be discolored in the glaze.

T is the blue rabbit stamp on the bottom but no impression. The stamp indicates it is pre- 1929.