Antique microscope for entomology, late 1800's

A fine brass microscope in its original fitted case complete with lock (no key), possibly for entomology (c. 1880).

Base with 2 columns and side screw to regulate the distance.

The microscope is in superb condition with all of its original lacquer remaining and comes with a set of 3 numbered objectives ("1", "2", "3") and 5 glass slides. Probably a forceps is missing and one more little slot is empty (please see at pictures).

No sign or marks on it.

Case measures: 14 cm x 26 cm x 6 cm (5.52" x 10.24" x 2.36")

Microscopes: tall 25 cm (9.85") and wide at base 11 cm (4.33")