I've seen counterfeit rolls of film. Usually these are name brand boxes and cassettes with a small piece of leader sticking out. I've never seen counterfeit off-brand film.
I would tend to think that it is some type of special-purpose black and white film. I would do an exposure test from ISO 1 to 100, and develop in a standard developer, just to see what it is.
It is transparent, hence no emulsion. Unless just the leader is transparent, which seems unlikely. I don't think Kalt ever sold film under their brand, so I'd say it's a dummy roll, maybe for promotions or something.
KALT makes reloadable 35mm Cartridges. I have some microfilm it is red but not the base the emulsion. I am pretty sure that back in the 70s we had some of that stuff to teach people how to load cameras and reels. I say it is practice film.
Thanks for the replies guys. What I'm going to do is pull the film out a little further and see if there's any emulsion in there. If it is, I'll assume it's microfilm and we had to give up a few frames to find out. If I keep pulling and never see emulsion, than I can only assume it's a dummy roll.
Or at least it will be, by that point :)
This roll (and several others) were all from a customer who found a box of film in a late family member's house. I assume most of them are blank (leaders still out, no crimp on the leader from being loaded), but I won't know until I develop at least some of them.