buy bronze eyeglass frames

In January of 2000、 I was in Ho Chi Minh City and bought some eyeglasses in a shop near the center of the city. They turned out to be the best damn eyeglasses I have ever owned. I am wearing them right now. They are simple wire frame eyeglasses that appear to be made of bronze、 with simple hinges. The piece over the nose twists. I have made two subsequent trips to Vietnam and bought eyeglasses on both trips、 but the eyeglasses were of different construction and inferior quality. If anybody can give me some names of some shops that might sell what I seek、 I will fly to Vietnam to buy a lifetime supply of frames. It would be worth it to me.