Gold for current delivery closed at $426.70 per troy ounce on Tuesday on the New York Mercantile Exchange, down from $429.50 late Monday, AP reported. HSBC Bank USA gave a late quote of $426.70, down from $429.20 Tuesday. Gold closed in London at $427.40 bid per troy ounce, down from $435.70 on Friday, the last day of trading before the May Day holiday. In Zurich the bid price was $427.33, down from $433.20 on Monday. Gold fell US$4.20 an ounce in Hong Kong to close at US$429.05 .