Numbered 555 and produced by V Richter, Copenhagen.
This image is attributed to Antoin Sevruguin and appears in the "History of Photography and Pioneer Photographers" in Iran by Yahya Zoka. Published in 1997 by Offset Press Inc., Tehran. The image is described in Parsi as "a gathering of Zaroastrians with the Avesta celebrating in Yazd".
The number "216" appears on recto on the large bottle in the forefront of the image on an an online copy of this photograph which has not been attributed.