An all too common mistake that sellers make, while listing bottles on ebay, is calling a tooled lip an applied lip . This is really only the tip of the iceburg when it comes to antique bottle inaccuracies, but...
In old dump sites, where a lot of bio-debris, wood, paper, metal and tin cans were discarded along with the bottles you are going after, there's a lot of movement in the ground over the following decades....