A First Class stamp <a href=" http://verulamwebdesign.co.uk/cheapest-alli-in-uk.pdf#launch ">alli to buy uk</a> NEW YORK, Aug 14 (Reuters) - The amount of silver held bythe world's largest silver-backed exchange-traded fund, iSharesSilver Trust, rose to a four-month high as a sharp pricerally in the metal and economic optimism triggered strong retailinterest.