A very interesting take on the Britannia is this 1/4 ounce version of the 2013 bullion coin, made from silver recovered by Odyssey Marine Exploration from the wreck of the SS Gairsoppa. Over 100 tons of silver bars were recovered from the wreck with the full permission of the British Government and they’ve come up with this great idea. The edge detail is cool as well. Mintage is estimated at between 500,000 and 1m pieces, so should be easy to pick up and with (hopefully) a small premium. The ship in the image above is the actual SS Gairsoppa.

The coin is 7.76g of 0.999 silver and has a diameter of 22mm.