I can give you a few here. I find very few solid, one-number I.D.'s. Most targets have a range they fall into. Depending on where you're hunting (a salt water beach for example) that range can be quite large. In clean low mineralized ground or dry sand, a nickel will usually be 26-28, clean zinc cents 60-65, crusty zinc cents teens to 30's, clad dimes and copper memorials 76-80, wheat cents 72-5, clad quarters 87-9, typical modern pull tabs 25-35, older pull rings 26-33, gold rings 18-72, other jewelry including gold and junk can be anywhere. You add mineralization and/or corrosion to the equation and the numbers can change dramatically. You mainly need to keep the site in mind when detecting. If it's an old site, you're going to dig anything deep, in fact, I use the depth meter more than I do the target I.D. numbers. In ground that has been turned over (roto-tilled) you pretty much have to dig any solid signal, and maybe some iffy ones to get a feel for what might be there. At the beach, dig everything that isn't a dead iron signal.
