1966 US cover with Centennial of Cambria, California, Cancel. The cover is addressed and has a few small bends. A 1/4-inch section of the flap is stuck on one end.

Most items under $20 ship in a first-class envelope with collectible stamps and with card stock and, for stamps, glassine for protection; more expensive or heavier items may go Ground Advantage or Priority Mail. 

Check out my store for stamps, postal stationery, and covers (first day, space, flight, and more) from the US and worldwide. Most items come from my historian dad’s collection amassed over the course of more than 65 years. He specialized in the US, Nepal, and mountain climbing but collected from all continents.