I have a large box of 10"x10", grade 4 Azo with an expiry date of 1978 -- unfortunately it is fogged (and not too evenly fogged at that)...my fault as it has been at room temp since I got it maybe 12 to 15 years ago. I might be able to use it with busy forest scenes, but low contrast negs is not a problem I usually have.

Vaughn