Vietnam zippo lighters

I see many "fake!" Zippos selling on e bay. I live in Ho chi minh city (Saigon) and every Zippo being "sold as real" are "real good fakes" with date bars. Made in Vietnam. I have talked to many vendors here and when I pull out my Zippo guide and jeweler's loupe then they tell me real quick they are "Fakes" and ask me to move on. They tell me only veterans want real Zippos and will pay the big bucks but the tourist will be fooled and sold a fake, those are the ones being sold on e bay. I am back in California now.