Prada Cahier entered the record around 2016: structured rectangular body styled as an antique book with metal corner caps, in calfskin and mixed-material editions, embellished seasonal variants, with antiqued metal corners and clasp, enameled triangle on spine hardware and the flap with band clasp.
The notebook bag: a handbag styled as a medieval binding, corner caps and all - the shortest-lived icon of the Prada shelf and a marker of the mid-2010s embellishment era.
The introduction is marked circa because the documentation is: fashion houses publish far less history than they manufacture, and the file records the range the evidence supports rather than inventing precision.
The full collector's file for this model, era details, and the authentication walk-through are on the writing schedule; the record above is permanent.
Prada encodes no dates. The white interior number tags identify style and factory, the plaques identify the house, and nothing on a Prada bag encodes when it was made - so this maison gets no dating tool, and any guide selling a Prada date decoder is decoding something that does not exist. The doctrine here is materials and construction: pocone and Re-Nylon have a dense matte hand no fake fabric matches, saffiano's cross-hatch must be uniform under raking light, spazzolato shows directional brushing, and plaque engraving quality still separates the superfakes. Recent models should keep their authenticity cards, and for any serious purchase, route through a platform authentication program: eBay physically inspects qualifying handbags.
Model histories and date-code systems compiled from documented maison history, resale-industry authentication references, and period documentation, cross-checked across independent sources.