If you have Sacs,
SBA's or the Dead Prez dollars in Dansco (or any other albums) make sure they are in a very well controlled environment if you do not want them to tone. Dansco is not a magic word. It really does very little to nothing as far as protection from toning if they are located in a less than ideal environment.
The three I've listed above I have in an enclosed plastic tub with one of those silica gel devices. Previously I had my Sacs sitting on a shelf in a Dansco and they were starting to tone after only one year and toning on a Sac is generally not very pretty!
If you live in a area with low humidity and low pollution, you might be ok. But I'd keep an eye on them.