Stuff from ZergNet
Perfectly named, The Holy Grail triple-barreled shotgun was made in April 1891 for the 1st Marquess of Linlithgow and the seventh Earl of Hopetoun, John Adrian Louis Hope. It was snatched by a wealthy crazy gun-lover at an auction for a whopping £43,000 (~ $66,000).
The Holy Grail features three-barrelled ejector, 16-bore gun and with three triggers. It was made by the well-known gun makers, John Dickson & Son in Edinburgh.
Now I certainly know who to get for my team on a zombie apocalypse. Just have to find the buyer of this gun.