This stamp is perf 11, it looks brown to me but I can not find any place in the catalog for it to be brown. I have been working on classifying stamps all day perhaps I missing something.
Hello Joe. Orange colored stamps are especially prone to a process know as sulphuretting, also often called oxidizing. Sulphur from environmental sources such as air pollutants or being near rubber reacts with the orange ink and turns it brown. Here's a recent thread on the topic and some ways of how to deal with it if you want to: https://goscf.com/t/40403&SearchTerms=c19
No worries. The Washington Franklins have been known to cause a headache or two while first learning about them.
wt1, you're pretty good with the perfins despite not owning the catalog. Any plans of acquiring one? I've finally decided to sell a few of my stamps to afford more literature.
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Posted 03/08/2015 8:38 pm
