incised (in image) l.c.: ABirks (monogram) painted in gold on insude rim of base u.c.: NP 1285 3 printed in gold on base c.: APSLEY PELLATT& Co (in a banner) / (crown) / MINTONS (in a banner) (horizontally over globe) / 21 NORTHUMBERLAND AVENUE LONDON (in a banner) impressed in base c.: 3 (in a circle) / 6 impressed (vertically) in base c.: MINTONS
