Digital BW, The Print

>...
> Epson Premium Luster: acidic surface, basic base
...

Take a look at the B&W ratings Wilhelm gives Epson Premium Luster in 
his latest tests, for example 
http://www.wilhelm-research.com/epson/11880.html 

The B&W display for Premium Luster -- bare bulb (no glass) -- is >315 
years.  Nothing else is close for that bare bulb category.  (Color is 
45 years for that paper bare bulb.)

Paul
www.PaulRoark.com