Book excerpt: This important book documents the world's most famous and oldest surviving Dutch Delftware factory, De Porceleyne Fles (Royal Delft), which dates back to 1653. Beautiful plates, vases, covered pots, candlesticks, clocks, tableware, tiles, and watering cans are all here, from inexpensive pieces to breathtaking artwork worth tens of thousands. This reference includes guides to original and current prices, rarity, factory marks, year codes, and painter's signatures.