The antique M. Hohner 3-tier wooden harmonica store display case from Germany is a rare collector's advertising piece from the early-to-mid 1900s. It features three telescoping, fold-out, or drawer-style tiers designed to showcase a variety of classic German-made Hohner harmonicas on general store counters. 

Measures 11" x 9.5" x 6" when closed.

The cotton strap that controls how far the lid opens is missing a section (see in photos), otherwise it is in good functioning order.