Hi,
Yes,it is Hermann Bauer (Schwäbisch Gmünd).Crescent and crown mark is not compulsory.
The company Hermann Bauer was founded in 1863 and is still active.
http://www.hermann-bauer.com/history-of ... bauer.html
Hermann Bauer was born in Heilbronn in 1833 and had to support his family at an early age due to the early death of his father. After training as a steel engraving apprentice, he expanded his knoledge in Holland, London and Paris, before he founded the silverware factory in 1863.
Regards