200 Dollars - Elizabeth II 6th Portrait - 80th Anniversary of the Battle of Britain

The Battle of Britain ran from July to October 1940, and by its end the RAF had lost over 1,500 aircraft. The Luftwaffe, expecting a quick collapse, instead found itself in an attritional campaign it hadn't planned for. Dowding's use of the Dowding System — an integrated network of radar, Observer Corps reports, and sector controllers — gave Fighter Command an information advantage that raw numbers alone didn't reflect.

Perth Mint's commemorative gold program for major WWII anniversaries has been consistent since the 1990s. The 2 oz .9999 fine gold format used here is among their heavier single-coin issues in the anniversary series.