Both of the poster maps show the land and the domain, but one is a slightly larger display of the southwest part of the continent, and the right-hand third of the poster is Anuirean Calendar.

Cardsheet #5 has yet another map of the continent on one side, showing a little bit of Thaele (the northern continent) and Aduria (in the south west). The back is titled "Player's Domain Tracking Map" and shows the same southwestern part of the continent that the second poster map does.

I can send you a scan of cardsheet #5 if you like. The poster map might be a bit more challenging for my A4 scanner, but I can make a plan if you don't mind seeing it in a number of chunks.

JasonZavoda wrote:Other than the Anuirean Calendar is there any information on these two items that is unique to them? Does the map with the calendar show anything not seen on the other map?

The poster map has some numbers in each of the domains on the map, which might be relevant to the game. It's been a while since I read through this set, so I don't remember how the domain meta-game works. I've uploaded a rather poorly taken photo of the poster map here to give you an idea of what I mean.

The back of cardsheet #5 is a black-and-white version of part of that same map, but without the numbers. You're not missing anything by not having that. The map on the front of cardsheet #5 looks like it might show some of Cerilia's geography that isn't shown on any of the other maps, but if does, it's not much.

Please shout if you'd like a scan of the cardsheet map or a better pic/scan of the poster and I'll happily oblige. (But that'll be tomorrow morning.)