This is Agfa Scala 160–but traditionally developed in D-76, instead of R100. (Yes, it is somewhat a waste of the film, but I lost a roll’s worth of developer anyway…)
Granted, the negatives do not look as cool as the positives would have, but in this day and age, I can’t help but wonder if the relevance of transparency film has really passed. Slide film is more difficult to expose properly, harder to scan, and certainly more difficult to develop. Given the ability to post-process (adjust blacks and contrast, mainly…) the resulting look is nearly identical. Been there, done that…but otherwise hard to make the argument for reversal developing.