Once your existing FNB Visa Cheque Card or Credit Card expires, you are issued with a renewal card. on which your Verified by Visa details have automatically been updated. You do not need to re-. activate Verified by Visa on your renewal card.
The 875 stamp stand for purity of the gold. 24kt gold is 100% pure gold,23kt gold is 95.8% pure,22kt gold is 91.60% pure and 21kt gold is 87.50% pure. This purity is obtained â¦ when you calculate (24kt/ 21kt) * 100 = 87.50%.11 people found this useful.hat is the meaning 916 kdm in gold?  KDM: Gold Jewelry from some places is / was marked with a KDM stamp  which means that the Jewelry was soldered with Cadmium.
925 means it is sterling silver or a 92.5% purity of silver. NF is a hallmark of the silversmith. I am trying to find nf now. I will post when I find it. From LCsocal: I aâ¦m not sure that is correct, otherwise NF would be the busiest man in Thailand. I believe the NF indicates nickel filled with sterling silver plating. This would be consistent with the hallmark GF 14K, which means gold filled--an alloy of some sort with 14K plating.