Flight Barr and Barr William IV 1830 service trial or sample plate the decoration being only the underglaze blue components except for one cartouche painted and gilded with a rearing horse, impressed marks to base, 25cm diameter See Flight and Barr Worcester Porcelain 1783-1840 by Henry Sandon page 192 for a complete version of this service. Condition report: Small 4mm rim chip to underside, scratches overall, wear to enamel of the fully decorated cartouche including the wording on the surrounding ribbon.