HIE notch code help - found film in holders

[Sevo]

Worse, Plus-X is similar as well - you really have to go by spacing. Three triangular and one rectangular may have been used as the generic "black and white" signature for the entire generation of Kodak films, with the spacing for speed and type.

[Jody_S]

I initially went by the notch codes here.

Unfortunately, 320TXP wasn't on the list, I gather the product was developed after the Kodak chart on that page was made.

[Jim Jones]

The 1976 Kodak Professional Black-and-White Films agrees with Paul about HIE, and shows Kodak Royal-x Pan Film 4166 with the more closely spaced V-notches as Jody posted.

[StoneNYC]

Attachment 128935this is HIE. It's close, but not what you have.

Yes the spacing here is different, look close, here he space between peaks of the notches are identical on the OP image the V spaces are tighter together then the final rectangle notch peak distance.