Modern Coin Mart via eBay offers this 10 troy oz. .999 Silver Bar from the S.S. Gairsoppa Shipwreck for $229 with free shipping. That's $36 below our March mention, $70 off, and the lowest total price we've seen. It's one of almost 7 million silver ingots that sank when the S.S. Gairsoppa was torpedoed by a German U-Boat in the Atlantic Ocean on February 17, 1941. It's certified to be 99.9% pure and sealed in protective soft plastic. Deal ends September 22 at 11 am ET.

Note: Silver is currently trading at around $17.84 per troy ounce.