First guess would be a painting of Bas Relief which is a sculptural style going back to Greek - Roman times with cameos and marble. (Looks like pen and ink are possibly water color.)
Interesting grouping - Mr. Talmant has done some similar things with some of his flat groups.
mark
P.S. Of course given some of the cool things out now days I could be completely off and would not be surprised to find out they are flats or a cut paper sculpture...
