I picked up an old collection which had 5 Columbian cut squares mounted on a page. The one in the lower right, which is "Five Cents," definitely appears to be a different shade than the one directly above it. Could this be the rare: U350a 5cent Slate Brown error?
The 10c value is the slate brown color (more slate than brown, if you ask me), if you re-check your catalog listings. That color was mistakely used for some of the 5c values.
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Posted 11/22/2017 1:33 pm
