Siegfried B is right. I've lost count of the times I got burned. Have learned a lot in the meantime, but you never know it all. At this point in your collecting endeavors, post photos, if available, and descriptions here before buying. This site is something that didn't exist "back when." You had to depend on references and other collectors for support. There were no known collectors nearby here, so I flew mostly by the seat of my pants. Your knowledge and confidence will grow as you learn and many pitfalls will be avoided.