"Jesus Christ in a crown of thorns," after Guido Reni

[Art-lover]

Friends asked me a question about how much can cost of their film "Jesus Christ in a crown of thorns" based on "Ecce Homo" by Guido Reni (Ecce Homo. Reni, Guido. 1575 - 1642).
Size: 48.5 x 36 cm, without a signature. Restored ca. 5 years ago. A new frame (oak).
Allegedly made in the mid-19 century. The Family version was probably imported from Italy until 1860

I would be grateful for his help in the assessment.
More would be interested to know the opinion of experts, as this original version of Ecce Homo. Individual author's version or copy of an earlier prototype? In the web version of this image I could not be found.