35mm Negative.
N3 35mm Negative Class 37 37140 Reading
N3 35mm Negative Class 37 37012 37xxx Reading
N3 35mm Negative Class 47 47xxx Doncaster
N3 35mm Negative Class 47 47xxx Rading
N3 35mm Negative Class 37 37141 Machen 14.04.90
N3 35mm Negative Class 37 37230 Toton 07.08.04
