Vintage Schott Mainz Jenaer Glasses: set of 6 tea / coffee glasses with copper

...and brass metal holders A set of 6 glass coffee or tea cups in copper and brass metal holders, ca 1960 - 1970s. The glasses are marked Schott & Gen MAINZ, JENAer Glas. The holders are unmarked. Condition: All 6 are in good vintage condition, the glass without chips or cracks, the metal holder without large scratches or staining. The glasses are VERY easy to remove from the metal holders for cleaning purposes. Size: 2 3/8" tall (6 cm)