Zassenhaus Keramik Salt and Pepper Mills Grinders Wood Made in Germany MCM

Zassenhaus Keramik Salt and Pepper Mills Grinders Wood Made in Germany MCM - These measure about 7.25" from bottom to the top black knob and about 3" in width - I'm not sure what era these are from. They look vintage and mid century modern but I don't really know. They are marked Zassenhaus Keramik Made in Germany on the white portion at the bottom. There are also #'s 1-6 marked with arrows which indicate the adjustable coarseness of the salt or pepper. - They are in working condition but do have some wear here and there. Wear to the wood and a chip in the plastic bottom of the pepper after the word "made". - I haven't tried to clean the bottoms of these. - A very nice set to use or to add to your collection!!