How can you tell a real Gucci bag from fake? Authentication is never a perfect science; what might be true for one style will be different in abother bag. Even some fake bags look authentic to an untrained eye. Gucci is one of the most counterfeited brands in the world. Our goal with this article is to educate you about authentic Gucci bags and what to keep an eye out for as you browse for pre-owned Gucci bags. Every Gucci bag that’s for sale on Yoogi’s Closet is 100% authentic or your money back.