I just won a top handle speed graphic in 3 1/4 x 5 1/2 size (is this "postcard" size?). It looks to be in pretty good shape over-all (we'll see how bad the shutter is) but is minus the lens. Anybody know what a "standard" lens would have been for this camera when it was new - by which I mean, what brand/length/etc would it have been sold with? In shutter or not? Also, what sort of film holders do I need for it? I have a bunch of metal ones in postcard format from an ICA Trix - would those work?