Background I have been buying and selling Columbia Exposition tickets for more than three decades. My special area of interest has been the Souvenir Portrait Tickets, although my interest certainly extends...
I notice that the 24c issue of 1861-1868 gives a lot of buyers and sellers problems when it comes to identifying the numerous color varieties! I see common color varieties being confused with the scarce more...
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...