 The .45 Luger prototype serial number 2, believed to have been a back-up to Serial Number 1, survived the 1907 trials and is in private ownership.Its rarity gives its value of around US$1 million at the time the "Million Dollar Guns" episode of History Channel's "Tales of the Gun" was filmed, recheck by "Guns & Ammo" as of 1994.At least two caliber .45 Luger pistols were manufactured later for possible commercial or military sales; one is exhibited at the R. W. Norton Art Gallery, in Shreveport, Louisiana.