Only reason I ask is I saw an ad that looked interesting. Pasted below;

Best quality R.B.Rodda, London & Calcutta, sidelock non-ejector hammerless double rifle in 577/500 calibre. 28" steel barrels with one fixed and four folding sights, Purdey style third bite, and extremely good bores. Raised rib hand file cut at breech and muzzles, flip up moon sights. Back action sidelock with crystal cocking windows, and profusely scroll engraved, retaining 50% original case colours. Top tang extends over comb. Cheek piece pistol grip stock with original hard rubber pad. Lever fastening fore-end. In its original best quality oak and leather case with trade label, oil bottle, sling, ammo and cleaning gear. A magificient best quality rifle originally built for the Game Warden of Kenya. Normal License Required $NZ20000
$US13000

What do you guys think?