My St Lukas Lustre Vase

Another Dutch piece is this little lustre vase.
St. Lukas Pottery ( Kunstaardewerkfabriek St.Lukas 1909-1933 ) was established in Utrecht by A. Enthoven, with G.D.J. Offernans as the art director. They specialized in triple fired lustre glazes with decorations of plants, fish, insects and other natural forms which are really prized by collectors. Mine is the more familiar item in a vibrant teal/peacock blue. The lustre in some light conditions gives off a variety of tones of yellow from gold to orange. It glows!
On the bottom is the letter K that refers to the base turquoise coloration, the other number refers to the shape. Dutch vases have a particular shape that I really like!