A late season, red skin, red-flesh Japanese plum. Origin: Byron, Ga., by Jim M. Thompson and W. R. Okie. BY7607-10 =(Frontier × Redroy) × o.p.; seed planted 1982; selected in 1985; tested as BY8155-70; released 4 Jun. 2004. Tree: moderately vigorous; somewhat upright; very productive; self-infertile; blooms with Methley; chilling requirement 750 h; moderately resistant to bacterial leaf spot and bacterial canker diseases. Fruit: medium, 50 mm diameter, round; skin is dark red to reddish-black; flesh is red, firm; outstanding flavor; high anti-oxidants; clingstone; ripe mid-July, 3 to 4 weeks after Santa Rosa and Morris.