I have 1957 and 1963 proof flats brown envelope that have milk white spotting just on the halves?????
Gotta '55 'flat pack' that is pristine and proper..........proper storage is a factor when keeping these.
Yep, I gotz me toouvem. In fact, all of my long held proof sets are fine, white and pristine like I like 'em. The ones with "color" (aka damage) I own are ones I picked up in recent years with the express purpose of studying them. The only proofs I have that are chemically unstable are the ones in TPGS slabs.
The mint label seems like a likely culprit I don't think cellophane degrades into nasty things, but I know enough just enough organic chemistry to know that I don't always know what I'm talking about
Loved that movie. Interesting factoid, the project scoop discussed in the book and movie actually existed. Another interesting thing is the book contained a bibliography of sources, and the names of some of the authors are the same as some of the characters in the story.
