old antique English white ironstone semi-porcelain rectangular platter or tray

Beautiful large heavy white china platter or tray with rectangular shape, about 14 1/2" x 10" overall.

The mark is Royal Semi-Porcelain - John Maddock & Sons - England, early 1900s vintage.

There's a few brown spots of foxing and a little wear and scratching from use, but overall it's in remarkably good condition for a piece of this age and type.