I've got a truckload of frozen APX100 (it went into the deep freeze the day I purchased, so no heat problems) that I bought when Agfa announced it was bankrupt and I'm looking to shoot a roll of it over the weekend.
Big question - rate it at box speed and develop normally or adjust for its age? If I do adjust, what would you guys recommend as a decent starting point?
I have some of this from the 1990's. A couple of years ago I shot it at box speed with excellent results. If in doubt, shoot a roll and bracket at 50 and 100, although I doubt that will be necessary.
I too have a stash of APX100, some older than yours, and I find it has kept its speed very well. Rate it at 100 and enjoy. FYI, as I'm sure you know, APX100 and Rodinal is a lovely combination.