Copied: Here is indeed a rare sight to behold. This beautiful double Sidelock rifle was completed in 1895 for the Earl of Roseberry, the Earl was formerly the Prime Minister of Great Britain. The rifle is chambered in the exceedingly rare caliber of .450/.360 of which only two rifles have left the London factory in this chambering. This rifle was the Earls primary deer stalking rifle and now belongs in a private collection.