I found this while organizing my home office. I believe it's from the Showa era, likely the 1950s to 1970s, but I don't have any specific details. I tried blowing through it with a straw, and it made a sound. However, as a novice, I have no way of knowing if the pitch is correct. Please consider purchasing this item with the understanding that it is a used, antique, and vintage item that has been kept by a private individual. It will be wrapped in bubble wrap and shipped anonymously. 23-hole Tremolo Harmonica Made by ZEN-ON-Tombo Gakki Key: C? Size: Width 18.0cm, Depth 2.8cm, Height 2.6cm Weight: 138g #Showa #ShowaRetro #OldTools #AntiqueInstruments #MusicalInstruments #Harmonica #Tombo #ZEN-ON #Zenon #TomboGakki #23tone