The oval medallion is in deep blue ceramic (jasperware) overlaid with white ceramic ornament. Around the edge of the oval rim in raised Roman capital letters is the motto, AM I NOT A MAN AND A BROTHER? Applied to the surface of the medallion is a low-relief figure in profile of a black man in chains, kneeling on one knee with hands clasped and raised as if in supplication. The figure is on a carpet of earth. Wedgwood's factory produced similar medallions over many years. An example, in cream white jasper with the image and the letters of the motto in brown/black jasper, owned by Colonial Williamsburg, was included in the Benjamin Franklin Tercentenary exhibition. Another, in white jasper with the figure in black and the motto in relief white letters, is in the Schreiber Collection at the Victoria and Albert Museum.(museum number 414: 1304-1885). The V&A credits the model to the artist William Hackwood. It can be seen on their website, www.vam.ac.uk, by striking "Search the Collections."
Probably one of the examples sent by Wedgwood to Franklin