Not all pre-86's are created equal. Before purchasing you must determine whether its transferable or a dealer sample. Transferables are worth alot. Pre-86 dealer samples are worth quite a bit because they don't require a LEO letter and if I remember right you can keep it after you go out of business. Post-86 samples not much. Many post-86's won't bring the price of the parts kit, so the receiver is usually cut up and the parts kit resold.