Table or hotel doorbell nineteenth century Indochina

Rare and pretty table, counter or hotel doorbell in engraved brass. Late nineteenth century, indochina or vietnam. Very refined decoration in relief of birds flying over agitated waves, framed by friezes of greek and geometric elements depicting stars. Some small scattered shocks and old patina. The doorbell is perfectly functional. Height: 16 cm, width: 9.5 cm.