M.Caimmi report the discovery of an apparent supernova at 2017 09 23.12432 on image obtained with SC Telescope 0.24-m f/6.5 and CCD Atik 314L (exposure 15 frame x 30sec) from Valdicerro Observatory (C92) - Loreto (AN) Italy, in the course of the Italian Supernovae Search Project (ISSP). The new object is located at A.R. = 06h55m50.64s Decl. = +40°55'51.3" show the source at 18.7 Mag. Astrometry with respect to UCAC-4 stars which is 1.5" South and 2.9" West from the centre of Galaxy PGC2173099. Other images of this object taken in the following nights, lastly confirmed at 2017 09 26.12393 from P.Campaner (ISSP) with reflector 0.4m f/5.5 from Ponte di Piave - Italy
