Whenever these archival related conversations arise I contemplate how all of those amazing classic and semi-classic stamps that cross Siegel's auction block and are peddled by dealers made it through the environmental tempests over the years, pre-air conditioning and humidifiers and "archival" paper/mount claims (actually pre-mounts; hinges only, sometimes horse glue and paper). Of course we are only talking a century or so. Who knows what would be left in 500 years. Is it practical to ask? Not an unworthy goal to preserve but at what point impractical. Should C3a's be suspended in an atmosphere of inert gas at 53% humidity and who will be responsible.
Whenever a century old album of the grand and beautiful type is discovered and "picked" are we not destroying an original slice of philatelic history or are we "preserving"?
And what about "restoration" which in philately causes endless consternation when it entails hydrogen peroxide, reperforating, regumming, cleaning, thin filling and other unforgivable "sins" committed in the name of making something more aesthetically pleasing (and more valuable). Are these activities not really just helping the cause by reversing poor stewardship.
Sometimes I wish I collected rocks.
