In gold the ounce is not the standard ounce, it's called the Troy ounce
2020-04-25: Credit Suisse sells at 54'520 CHF so around 56’158.13 USD and spot was at 55'756 USD aka CS does: spot + 1.2 % 2020-05-15: Credit Suisse sells at 54'860 CHF so around 56’480.13 USD and spot was at 55'756 USD aka CS does: spot + 1.2 %