V893 Sco superoutburst? Resembles a precursor and superoutburst. Observations are recommended. YYYYMMDD(UT) mag observer 20160314.817 <124 (Tsuneo Horie) 20160321.551 128 (Rod Stubbings) 20160321.810 13.64V (Kenji Hirosawa) 20160325.794 12.37V (Kenji Hirosawa)