Unfortunately I didn't find many old coins and never found any cobs. The only silver coins I found are from the wreck Dr. Lubos Kordac (TN member Bobadilla) calls "Golden Coin Wreck". And they are from 1812 and 1814, so this ship didn`t sink around 1805 like Bobadilla suspects, but later. (don't have them anymore, they were stolen from my house together with the laptop, camera etc.) And I saw some more coins from after 1810 a friend found there too. The ballast mound is right in front of the "dog teeth" in less than 20 feet of water well inside the reef. It`s close to the abandoned former hotel "Sueno del Caribe". I know another small ballast mound in less than 10 feet of water inside the reef (an anchor is stuck on the reef there too) one cove south from Cabo Engano.