Beautiful bag! congratulations! 🎉 The hardwares on Hermes bag, like vintage Chanel bags, are coated with gold alloy (or platinum alloy on Hermes silver). In the alloy, there are metals, other than gold, do oxidized easily. So, avoid humidity, avoid alcohol, and avoid taking your bag to beach/bay area (salty air areas). The gold coating on Hermes hardwares is very thin, it's often faded from using (skin contact). From my experience, the platinum alloy coating lasts longer. however, both gold alloy or silver alloy coatings get scratched very easily. Hope this help ❤