To get an accurate reading of the film-type edge notches without ruining any film you can place a sheet of film over a sheet of white paper in total darkness and use a sharp pencil to trace the shape of the notches and the adjacent straight film edge onto the paper. Then return the film to its lightproof packaging and examine the film-type notches in the light.

The Kodak Code Notch Data PDF provided in post #3 is dated April 2004. It doesn’t cover a great many Kodak sheet films of earlier manufacture that had been discontinued by then.

If you can provide a photo of the edge trace, perhaps someone here has an old Kodak Code Notch data sheet that can be matched to the trace to determine the film type.