SUMMARY
 The stone sculpture of the Virgin Mary from the facade of the church Our Lady of Consolation in Żyrardów is one of the numerous sculptural implementations of Andrzej Pruszyński workshop. In 2018 the monument was under conservation and restoration works. Preliminary macroscopic examination of the monument showed that under the numerous secondary layers of paint on the stone sculpture there is a dark green, multi-deck colour layer that could imitate a statue had made in bronze casting technique. As a result samples were taken and subjected to laboratory analysis. The research carried out allowed us to conclude that the described layer is kind of a secondary nature and is a testimony to the restoration of the monument probably after the end of World War I. It was decided not to remove the patina and to fill in the gaps in the course of the ongoing restoration and conservation works. This layer had historical and documentary value and was a testimony to the popular in the 19th century and probably known at the beginning of the 20th century practice of patinating sculptures made in less noble and less durable material than bronze. Moreover, in the course of conservation works later layers of paint and cement repairs were removed. Then the structure of weakened limestone rock was strengthened and numerous small losses of stone were filled in. As a witness the defect on the left knee of the figure was left without filling in. It is a trace of the bullet that was probably created during World War I. Moreover, the missing figure’s right hand was reconstructed. A reconstruction of the gilded halo was also made. The design of the conservation work programme is always a very complex process as it requires the simultaneous consideration of many factors. The aesthetic and historical interpretation of the work is important, the understanding of the author’s concept and the essence of the destructive processes. In the case of the described sculpture from Żyrardów it was also necessary to take into account the technical possibilities, take into account the expectations of the owner and users, or customers in general, as well as the conservation community. Preservation and restoration solutions adopted in the work programme, including hand reconstruction and unveiling of the following items and the restoration of a painting layer imitating a green patina, restored historical artistic values to the monument. The aesthetic effect achieved this way brings a new quality to work that can be the object of criticism but by restoring the sculpture’s lost aesthetic values it is possible to continue to function as an object of religious worship.