Red's right, it's a lap guitar. You can hear Lee playing it on the Fly My Pretties song, Catch the Light
It's been ages since I listened to the whole album or watched the DVD. I must remedy that! That was how I first properly heard Age, although I'd heard of him. It was all madness from there on in.
In those photos of Age playing outdoors, I can just imagine him singing his song "Summer".
Oh, and there's a story behind those Matt Mueller photos nonch posted. They're taken from a time that Age helped out on a film contest. Contestants had 48 hours, I think, to make a short film from scratch, based on a certain theme (or something like that). Age supplied the music, of course.