The Panther is a German medium tank deployed during World War II on the Eastern and Western Fronts in Europe from mid-1943 to the war's end in 1945. It had the ordnance inventory designation of Sd. Kfz. 171. It was designated as the Panzerkampfwagen V Panther until 27 February 1944, when Hitler ordered that the Roman numeral "V" be deleted. Contemporary English language reports sometimes refer to it as the "Mark V".
This site contains full information about Panther Tank Ausf G.