Help estimate now PK Lihina

[PSIHolog84]

There is a picture. Pencil. Portrait of a boy (2 years with a dog). The boy later became a general and died a few years as (ie the name of the boy known). 1925 size of about 50/40. Author Lihin PK (student Repin). Signed and year are in the picture. Actually interesting approximate cost of a picture that would determine whether to bother selling it.