This is a vintage Rosenthal Studio Linie small bowl by Bjorn Winnblad in the Quatre Couleurs pattern.  It is a white textured design bowl with a gold medallion.  It is in excellent condition with no chips, cracks or crazing.  It is 5" in diameter and 1-1/4" high.  The bottom is marked Rosenthal Germany Quatre Couleurs Bjorn Wiinblad and in gold Studio Linie and numbered 7671.