Struck at a time when gold ownership by Americans was prohibited by the executive order.  Saudi ARAMCO could not secure oil rights in Saudi Arabia without paying gold because the US Dollar was not accepted anymore by the Saudis after all the wild spending in support of World War Two - even though the US "won".  These gold rounds struck in the same fineness and weight of a British Sovereign have never been more historically significant than today as the Saudis and Arab neighbors threaten to disrupt the petrodollar by selling oil and gas in Rubles or Yuan.
 
233 in all grades at PCGS and NGC put together, 67 in higher grades at both grading companies combined.  Many of these are believed to have been shipped to India for melting shortly after delivery to Saudi Arabia.