Vintage .999 1 Kilo Silver Bar – Swiss Bank Corporation. Scarce! Serial No: 015571. Considerably scarce Vintage 1 Kilo (32.15 oz) Swiss Bank Corporation .999 fine Silver Bar. The Silver Bar was made by Swiss Bank Corporation, which was a large integrated financial services company located in Switzerland. These bars are no longer being made. Obverse features the banks name with the iconic logo of the three crossed keys. Each bar comes stamped with the weight and purity along with a unique serial number. Serial No: 015571.