Usually, they should look like this:ġ23456 – 789101 (model & serial references) Most of the serial codes are found on the reverse of the leather internal tag, just next to any internal zipper, in the inside of bags. BREV.” stands for PATENTED MODEL, unique for every model which was produced.ġ980s: we start spotting the TRADEMARK after the GUCCI signature on the logosġ990s: Serial and reference internal numbers in ALL bags, and in MOST of leather accessories. GUCCI Firenze”, as you can see from one of the logos above.ġ930s: Logos featured the “liftboy”, the person in charge of carrying Florence hotel visitors and clients luggage to their roomsġ960s: First color on the logos (red) appears in the early ’60s.ġ950s to 1970s: This was done to give importance to GUCCIO’s name. Thanks to GUCCI Historical Museum in Florence, it is easiler to go through GUCCI’s luxury vintage items history, through the history of GUCCI’s logos.ġ920s: Gucci logo featured “Valigeria G. During the 70s and 80s, many handcrafts who get commissions of normal and exotic leather creations, placed a pantent reference number, along with the “Made in Italy by GUCCI” logo, as you can see below for this Gucci vintage genuine crocodile briefcase.