Vintage 60s Hans Theo Baumann for Rosenthal Thomas Mini Op Art Mod Vase

I have yet to find a Mid Century West German vase that doesn't stop me in my tracks.  
This little Mod iconic vase was designed by Swiss Bauhaus artist Hans Theo Baumann for Thomas Keramiks. It is quietly elegant on its own, paired with other West German Mid Century vases, and of course-- with greenery or flowers in it.
 
~MEASUREMENTS:
4"H x 4 3/4"W x 2"H
 
~FEATURES:
White high glaze porcelain
Glazed interior
Round shape with dimensional concentric circles on front and back
Rectangular opening
Rectangular base with green Thomas Logo
Made in West Germany
 
~CONDITION:
Excellent vintage condition.  There are no chips, cracks, or crazed glaze, it is in impeccable condition. It has been hand washed and dried and is ready to head off on its next adventure.