Enough stabbing in the dark, here you go. Although some have given rare guns, here is a prime example of the rarest and most expensive double in the world. During the Great Depression, Parker AH decided to make some of the most expensive doubles. Three were made prior to problems. Two are in museums, the other is in a private collector's hands. The Parker A1 Invincible. If you could find this firearm at auction, with the desire to purchase it, make sure you have a full ink pen, that check will contain seven zeros before the decimal point. http://parkerguns.org/pages/grades/Grade9.html?INV=View+Invincible+Pictures, citing: Field & Stream
Joshua Cox