Gold prices and central bank demand are discussed by Peter Leeds of and considerations about the best penny stock picks in the sector are revealed. br You could almost put all the gold that has ever been mined into a single Olympic swimming pool. br Of all that gold, only about one fifth (which is about 30,000 tons) is freely traded or held by central banks. br This is the first time that central banks from all over the world are buying gold, which has implications for penny stocks and stock picks. Mexico picked up 79 tons in a single month. Korea, Vietnam... br Not to mention the most active players of India, China, Pakistan, and most of the European Union nations. br br This is even with a potentially recovering economy, and upcoming increases in interest rates, both of which could hurt gold prices, and by extension our stock picks and top penny stocks.