At 0630 AEST on Monday, the currency was trading at 73.11 US cents, up from 72.84 cents on Friday. And the Australian share market looks set to open lower after falls on Wall Street where weakness in petroleum-linked equities weighed on stocks following poor earnings from ExxonMobil and Chevron and a drop in oil prices ATHENS - Attention will be focused on Greece's embattled banks on Monday when the Athens stock exchange reopens after an absence of nearly a month because of the country's debt crisis.