This very attractive 30 hour Mercedes ceramic mechanical shelf clock of the Baroque Meissen style (debatable) from the 1970s is more of a novelty item than a clock. It is a time-only alarm clock movement made by Gebrüder Hauser and marketed under several names one being Mercedes. Researching ceramic clocks on EBay or any other auction sites will reveal the Mercedes name as well as other retail names on similar looking clocks. For example here is a similarly styled Alana clock.
My Mercedes is in excellent condition with no chips, cracks or any sign of wear.
The Gebrüder Hauser clock factory (Die Uhrenfabrik Gebrüder Hauser) was founded in 1923 by Otto and Josef Hauser in Weigheim, Germany. Josef Hauser resigned in 1926 and moved on to form his own company. The company name Gebrüder Hauser then received an additional owner, Otto Hauser. Aside from alarm clocks, clocks with pendulums and chess clock works were produced.
In 1951, the son, Eduard Hauser joined the company. From 1955 onward small affordable alarm clocks and chess clock works were manufactured. In 1965 Norbert Hauser joined the company and the company name was changed to KG.
The Gebrüder Hauser KG clock factory in Weigheim was eventually closed on 31 July 1998.
There are a number of variants of this clock, mechanical, electrical and quartz. The mechanical version will command higher prices and in my view is the more desirable one.
It will make an attractive gift knowing that the recipient would likely appreciate it as a curiosity and not keep it wound.