This is from the 1980s, when Filofax was a big hit. It's a 4 CLF 7/8 model. It's a Filofax that was very popular. The small, elegant "filofax" logo (photo 7) is quietly becoming a trend. Later models have a more prominently displayed Filofax logo. This logo on those later models caused many users to move away from Filofax. The leather surface will likely develop a mirror-like finish over time. The plastic cover on the clasp is missing. This was a weakness of Filofax at the time (photos 8 and 9). I use resin clasps purchased from 100-yen shops, etc., which I have glued on. Please enjoy this rare and evolving Filofax.