It's an old Auto Graflex from what I can see. The original "Auto's" had a small door over the lens; The newer "B" models had a bigger door. I have a 3x4 in pretty good shape and am awaiting film to come. The hardest part is getting ahold of the holders in my size. Most of these cameras came with a film pack adapter which is useless. If your lucky you'll find a bag mag or a rollfilm back for one. If your interested in one of these make sure the curtain is good, the shutter speeds work, although you'll probably have to adjust them, and you can get a holder or back for it. In decent working shape they go for about $45 or a little higher depending on condition. I donreally feel that it's a good camera to invest time and money in. The larger RB's (rotating back) 4x5's are much preferable.