Chuck,
Longevity? If you're talking about UV resistance, probably less than Unisub white alum., which has UV inhibitors in the coating.
The UV inhibitors in Unisub alum., give a slight "yellow" cast to the "white" metal. On its own, the finish looks white. Side-by-side, to Dyna Sub, it's definitely off white.
For indoor use, i.e. award plaques, signage, unless exposed to direct sunlight for extended periods of time, fading isn't a major issue, even without built-in UV resistance.
David "The Stunt Engraver" Lavaneri
DGL Engraving
Port Hueneme, CA |