A couple more ideas.
Front adds years in Talossan format. Back adds arms for the King and the subject; I like this in order to promote the arms of the citizenry. There's a bit more space for signature in both front and back.
I printed these options and feel that the picture is a tad too big at 35x45 mm. The spec says it can be as little as 32x26 mm, so anything between those two is game.
Wow, these just keep getting better and better! Definitely the best one yet!
It feels like to do justice to these, we should really get them printed on cardstock and laminated. In fact, we might want to actually just have them printed out as photo card style, like real IDs.
Feels like the government should be represented very prominently, too, though. Maybe scoot over the king's signature to make room for the signature of the Secretary of State, too? Or would that be too cramped?
Also: one of the things that was suggested fairly strenuously by some of the lawyers we have in the country was the phrase, "Valid for all Talossan purposes." Might be worth including that fine print somewhere on here!