Hi,

I was informed by Ilford rep (who is a regular on this forum), they do last quite a bit, especially if they are cold stored. Numbers such as 5 years seem to be tossed around. I have seen some data charting number of years and reduction in contrast somewhere recently.....

I would think, loss of contrast, loss of Dmax (darkest density), and fogging would be an issue. I think you really will have to test your own stock, since no one knows how they are stored anyway. I certainly wouldn't toss them out. If nothing else, it would be kind of fun to see if they are still in decent shape...