The most unusual and rare icons of the βHoly Trinityβ are mixed-hypostatic. (thread)
The word hypostasis means the essence of being or form, the way of its manifestation. The name βmixed-hypostaticβ is given because the faces of God the Father, God the Son and the Holy Spirit on the icon do not differ from each other. All the faces are brought together into one.
The eyes of the central face belong simultaneously to two more, located on the right and left. The unknown icon painter strove in this way to express the unity and indivisibility of the Holy Trinity.