IMPORTANT KPM PORCELAIN PORTRAIT PLAQUE OF PRINCESS LUISE VON PREUSSEN OF PRUSSIA: Circa Late 19th C., 10 3/4'' x 8 5/8'', unsigned, impressed KPM mark verso with paper label, encased in ebonized oval frame with repair, overall 12 1/2'' x 10 1/2''. Luise was one of Germany's most important royalties, and perhaps the greatest queen in Prussia's and Germany's history. The painting is one of the finest examples we have ever offered. Est. $4000/6000**