Hand Carved Wood Stringed Instrument Folk Art Qeychak or Qichak

Description

Hand Carved Wood Stringed Instrument. Condition is "Used".
Qeychak or Qichak Small and Large craved  String Instrument.
Ancient Iranian classical instruments. The oldest sample instrument.  The lower surface is covered by a hide/ skin on both. The instrument's box is made of berry wood.
The larger one has cloth strings.
The smaller one has metal type strings. The hide is cruling up on edges on the smaller one as seen in Pics.
Both instruments are in use condition.
Measurements are in the pictures.
Please look at all pictures as they are apart of my description