Manila, Philippines—19th-century Filipino painter Juan Luna’s 1885 long-lost art masterpiece “A Do… Va La Nave?” (oil on canvas, 21½” x 41”), whose previous owner, an Argentinean, who inherited the piece from her grandmother, Maria Alberta Esther Susana Pignocchi-Bonaldi, and recently showed up— hand carrying the painting— at Salcedo Auctions, was