** Shares of Australia's Cobre CBE.AX rise as much as 5.6% to A$0.057, its highest level since August 25
** Copper explorer executes investment agreement with Sinomine International Exploration (Hong Kong)
** Under agreement, Sinomine to purchase 70% stake in Cobre's Okavango Project in Botswana for A$7 million ($4.55 million) after an investment of A$3 million for Cobre's shares
** Stock is up 9.8% YTD, including the session's moves
($1 = 1.5389 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))