After different takes on this photo, I will rewire this post.
C. 1911-1912. This is gymnasia somewhere.
No indication that this is in Lubavichi.
We don’t know if this is Musya, no one showed why they think this is Musya. There is a resemblance.
In the front, there is probably a non-Jewish family sitting.
The man is a galach of some sort. Doesn’t look like a Russian priest, and a Catholic priest often would not have a family. Some Russian official, a bureaucrat, would not be wearing the long garb.
In addition, in the last row standing tall, if we assume they are teachers, only one on the right looks Jewish.
Upon closer look, many girls don’t look Jewish.
Town of Lubavitch was not a frum place after 1906.
If you know the authentic old time Chabad person he had a very sharp sense of humor,so I try as well.Thats missing from today's Madison Ave version of Shabad.