Age icons

[варвара-варвара]

Good day, dear experts! Please help to determine attribution,cost and age of the icon. The icon is not signed, the size h cm, the mechanical key. Boards slightly bent (see the end face on the pictures). The wood I cannot define. Rear Board a little "eaten", the pictures should be visible holes (bugs? the bark?). The history of the icon is unknown to me - she to me has got by chance. I would like to find out more information - where it could be written, approximately when did she have a name, and so on. How much it might cost? Thank you in advance, Barbara