This is a unique, antique handmade diatonic button accordion (harmonica).  It`s tone is E/A that make it sound pleasant and ringing. It has atigue tuning in 450 Hz. This old harmonica has unigue solid brass handmade plates, which gives instrument a wonderful sound. 

It was made in 1936 in Tula - famous centre of accordion making, by master Popov.

This garmonica has very beatiful and rich treble sound and powerful and deep bass sound.
Condition is really good.

                                                                    Characteristics:
·  Treble: 2 rows, 23 buttons

·  Bass: 2 rows, 12 buttons

·  Treble reed plates: 4 (four reeds for each button on right side)

·  Bass reed plates: 4 (four reeds for each Bass button on left side, and 2*3 for accord button)

·  Weight: around 5,5 kg

·  All treble and bass reeds are in tune

·  All buttons and mechanics work properly