White-fleshed, melting, semi-clingstone flat nectarine. Origin: Argo Selection Fruits, Elne, France, by L. Maillard and A. Maillard; Nectarjewel × ASFNBF0471; tested as 03.21 W.39. USPP 26,769; 31 May 2016. Tree: large; vigor strong; very productive; growth habit semi-flared to semi-upright, dense; very resistant to spring frosts; flowers showy, self-fertile; leaf glands reniform. Fruit: 120 g, homogeneous; round, flattened, generally with few bumps; 80-90% purple-red blush; very firm, semi-sweet, 12-13 ºBrix; eating quality very good, aromatic; keeping quality remarkable; shipping quality very good; susceptibility to brown rot (Monilinia fructicola) low; ripens 1-12 July in Pyrénées-Orientales Dept., France.