Spring-wound - wound with a key, runs for 3-5 days.
Half-beating (1/2) - beats every 30 minutes.
Signed dial by a Viennese watchmaker - enamel.
Glass - faceted, which refracts the light beautifully.
This design - a brass frame with glass fillings on all sides - was originally intended to allow the precise mechanics of the machine to be seen from all angles.

Johann Greiner was a famous Austrian watchmaker operating in Graz. His company was founded in 1823 and became a symbol of luxury. Greiner did not sell just any watches; it was a "watchmaking house" that produced and supplied the best machines for the aristocracy and wealthy townspeople.

k. u. k. Hofuhrmacher - means: kaiserlicher und königlicher Hofuhrmacher, meaning Imperial and Royal Court Watchmaker. This is an official certificate awarded directly by the imperial court in Vienna.