Ep. 54: The Importance of Periodicals

Michael and Charles discuss why periodicals are so important to
the hobby, and a couple recently published philatelic articles,
including; 1868 Production Grills: Why Size Matters by Rex Dean
Bishop and The US 5C of 1847: A New Approach to Impressions and
Colors by Scott Trepel. They cover topics such as the enigma of
the z grill, why philatelists should care about grills, and new
ways to classify stamps based on quality of impression.