Antique Childs Plate Uncle Toms Cabin Staffordshire Transferware Daisy Relief 7"

Antique c.1850 Staffordshire child's plate. Light black or dark brown transferware surrounded by molded daisy border. I could not identify the backstamp, which is an impressed asterisk or star.  

Central motif features "Uncle Tom's Cabin ~ Haley's Bargain for Eliza's Child".  It measures 7 inches in diameter. A unique collectors piece. 

Measurements and condition shown in pictures. No cracks, a couple small chips, some staining and marks especially on the back.