Mumbai, The Rupee on Monday advanced by 14 paise at 73.39 against the US Dollar in opening trade on selling of US Dollar by bankers and exporters, dealers at the Forex Market said.A local unit gained in opening session because of weak Dollar against other world currencies amid strong opening in stock market, the dealers informed.The rupee registered intra days high and low at 73.42 and 73.37 respectively, they added.