Czech opera singer, music teacher, painter and sculptor Jan Hilbert Vavra (1888-1950), also known as simply "Hilbert Vavra" and his father Czech stage and screen actor Jan Vavra (1861–1932) . Double signed postcard photograph, shown as themselves, dated in 1915. Size is 3.5 x 5.5 inches, slight creases on edges, otherwise in very good condition.