Vintage NAO Lladro Spanish Porcelain Figurine of Boy Child Angel Playing Harp

vintage porcelain figurine of a boy child angel playing a harp, produced in Spain by Nao, a division of Lladro. It believe it to date to the 1970s/ 1980s. It is in overall good vintage condition, free of damage. Marked on the base with a letters / numbers but missing the NAU mark. Please reference images of the underside. It measures approx. : 3.5" in height X 2.25" wide X 4" deep.