P&O Peninsular and Oriental Steam Navigation Company Ironstone plate circa 1840, the reverse printed with the company name, 22cm diameter See Laister P.: a Guide to British Shipping Company China of the 19th and 20th Centuries, Wyndeham Grange 2006 Vol. 2 p.173 for reference to this piece. Condition report: Overall crazing and minor staining. No damage or restoration.