Featured Two sculptures need help to identify maker

Bought this two sculptures on antique show.
Was told that both came from the same estate.
Can't figure out who made it.
Both signatures look somewhat identical. Maybe same artist.
If anyone have any ideas please let me know. Would be nice to know who the artist is.
I think the material is ceramic or plaster of some sort.
Each roughly 16 inches high excluding stand.

Thanks in advance.

 

And the same sitter, imo, a very characteristic nose. Very nice, Lennyt.

 

Looks like initials, SRB.

 

I thought Lennyt already mentioned that, but he didn't. Anyway, I agree, SRB.

 

Those are fantastic .

 

The style looks different.
Srb means Serbian, so it could be a pseudonym or nickname. Maybe it is also a proper surname, although Serbian surnames usually end in -vich.

 

Look good quality