New member here. My primary collecting areas are US Christmas seals and associated publicity materials, the Soviet occupation of Vienna during the summer of 1945 (locally-overprinted Hitler-heads), and US stamps and blocks to 1977. I am also the recently-appointed editor of Green's Catalog of US National Christmas Seals. Lately I've become really interested in US large Banknote issues and find their identification rather challenging, particularly the grills.
Does anyone else find the constant changes to
ebay's web interface annoying?!