STRIENEMANN-SIEVERT, ELSA (or Sievers, painter 19th/20th c.), 'Portrait of a Prince',

STRIENEMANN-SIEVERT, ELSA (or Sievers, painter 19th/20th century), 'Portrait of a prince', half portrait standing at a desk, oil/canvas, HxW: approx. 60x50 cm (85x75 cm with frame). Signs of age and rubbing, restored, a few small paint chips. With frame. VERSO handwritten title on stretcher, part. indistinctly inscribed and dated 'Prinz von Savoyen ... Munich, Cop. Elsa Strienemann-Sievert, 1909' or Schienemann-Sievers?.