Yesterday I did quick and dirty test of Agfachrome 100RS expired in 1991 and ever since kept in deep freezer. After processing it come almost perfect. Yes, Dmax is slightly lower, but not much, colour balance is almost bang on. Are these miracle results for colour slide film that expired 21 years ago?
Now I'm sorry that I didn't include Kodak grey scale and colour chart in the few frames. It was exposed at box speed. Scans are just resized and sharpened.