Mystery Artist 33 - Owl Sculpture PS

This diminutive owl is carved into an unknown material that appears to be either ivory or bone. An excellent amount of detail, the upper left edge shows an edge that may be from a mold, but I cannot tell. The initials “PS” appear in the lower right hand corner. Anyone know who created this piece? I really like the eyes. Add your comments in the section below, the owner would love to know more about the artist.