From Paraty, Marcie to Drew, every other year, Chloé manages to introduce one or two highly distinguishable, commercially successful and yet "very Chloé" bags. While I am more of a fan on its apparel side, I do agree that over the past few decades, Chloé has always stayed true to itself, owning that romantic ornate whimsy, without being overshadowed by its big name creative directors or swayed by overarching trends of the fashion industry.
As soon as these bags are proven successful, replicas start to emerge. I haven't seen any good replicas of Paraty, Marcie, Drew in person but I have seen the photos of some nicely done fake Marcie bags that I was pretty impressed. I have to admit that without side-by-side detailed comparison, I couldn't tell if the bag is real or fake based on just photos. Nevertheless, it's quite costly to knock off these bags because of their unique constructions. Paraty's oversized piping, Marcie's tonal saddle stitching, and Drew's ultra spongy leather and gold pin turn lock all take quite some attention to detail and investment to make them right.
However, for many Chloé enthusiasts, Chloé's date code system stays consistently (or deliberately) confusing. For those who have seen enough volumes of these bags, they would probably already establish a relatively consistent tracking system. However, we should all try to share less information until these models are discontinued. But, please remember, Chloé's date code is consistent in its own way. The following are some commonly seen date code formats of recent Chloé styles.