The most common question that I get asked is how to distinguish color varieties of US stamps. Over the next few months I hope to be able to put together some pretty comprehensive color charts of United States stamps.

#63 Blue                 #63a Ultramarine     #63b Dark Blue     #64 Pink             #64a Pigeon Blood Pink 

#64b Rose Pink        #65 Rose                #66 Lake              #67 Buff                   #67a Yellow Brown

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