I have a small ring agenda too, and it is hard to see the date code. It is inside the front cover on the left hand side under the pocket. Elux is getting a little sloppy on their return items though. I had to ship back the first small ring agenda they sent me (it was red, discontinued) because it had several small marks on the front, back and several scuffs on the inside. It was also missing the foam insert they put inside it to keep the rings from making impression marks on the inside leather. They sent me a replacement that is in better shape, but definitely not "new".