These coins are from the HMS Association, which sank on October 22, 1707 after wrecking on the Isles of Scilly, taking the lives of over 800 sailors and Admiral Sir Cloudesley Shovell’s personal treasure, which included these two coins. The shipwreck was discovered in 1964 and recovery efforts began in 1967, continuing throughout the 1970s. In total, over 10000 coins were recovered, along with countless other relics. The crowns seem to be tougher to come by than the other silver denominations. Looks like I finally own shipwreck coins now, which are their own interesting area of collecting covering enormous amounts of history and definitely feature a LOT more than Spanish Empire coins and double eagles!