Fuji GW 690III and Kodak Trix320 220 expired in 1976. Yes, 1976. Rated at ISO 100, developed w Cinestill DF96 Monobath (4 mins @ 75)
Frankly I was surprised that I could get anything, and this image is the best out of the lot. It still has fog (can be seen especially on the edges) but the very high contrast lighting helps a lot.
The other images I used SilverFX yellow filter to use the flaws to make for a more old timey image. But I won't mention that here..
I do Tri-X 320 that age or older fairly often, rated at 80, then soup in Caffenol (CH-RS, delta-STD, or CL semi-stand). Chilling the developer does help some with the age fog, but 5-7 stops of dynamic range is the most I would expect. It's a great looking emulsion, even in a diminished state.