Posted By:
KevinDo these oddities/doctored cards lack reds and other colors with red derivatives fade as do cars exposed to intense UV light?
There is really no comparing modern paint vs. 100 year old ink. Each color of ink has a different reaction in various stages of whatever process is being used. Intense UV light can be a factor.
From my experience ink has been through 4 or 5 changes (not counting photo or high gloss) since cards were printed; pre-war, post 1930's, all regular issues post 1948, 1974 - present.