Antique Holmes Style Stereoscopic Viewer #2 w/ 4 Stereoviews For Sale

This is an antique Holmes style stereoscope (viewer), of dark wood with glass lenses for 3D viewing of stereograph cards. No date or manufacturer marking on viewer, but probably made circa 1900. Handle is non-folding.
Four stereoview cards included, one is a litho of Mr Sears at his desk, also 3 misc Keystone views.