Greetings! I am a longtime stamp collector and APS member.
I am also a purveyor of quality United States mint never hinged singles, plate blocks, 1930s-40s mint NH sheets and more recent sheets. I also sell very old faulty US singles at great price reductions, often for 10 percent of catalog value or less.In these cases, the faults are always specified and photos are always provided. I also have a nice selection of old cacheted covers that will be for sale.