Dear Anatoliy - Thank you for submitting images of this heirloom given to you by your mother. My name is Erin-Marie and I am honored to be able to tell you about it. This is a 17th c. Greek or Russian triptych icon painting with gilding on wood depicting St. George slaying the Dragon. It appears to be in original condition, which is just what one would hope to see. Currently these are conservatively selling at auction in the range of $1500USD - $3000USD. The price range is dependent upon condition and imagery, while you have a popular subject and the piece is in original condition, there are some condition issues to consider which will affect value. In a gallery, I'd expect to see this piece with a retail price between $4500USD and $8000USD, although this will vary depending upon market fluctuations and regional variations.
Thank you for your submission.

Sincerely – Erin-Marie