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I've run film thru most of them, just for the fun of it. The folder in the background in the top shot has the bellows all deteriorated, so it's just something to look at. Shutter in the Leica is brittle and non-functional, the leather on the outside is dried out and loose from the body. The leaf shutters all work, the Brownie is a trip! One blade, spring actuated. Like a guillotine. Haven't had it on a timer but guessing it's about 1/60th. The gray "Pony" 35mm has two blades, speeds adjustable from 1/8 to 1/200 and ∱4.5 to 22. Doubtful if the shutter is anything close to accurate. Very "Kodakian"... affordable and worked well in it's day for advanced "snapshooters." The leather case setting on the Brownie has an "extinction meter" in it. A "DREM INSTOSCOPE" made in Austria. Have a look-up of that, it'll likely amuse you. The Graflex is a working camera, the lens/shutter are fine. And this one has the optional focal plane shutter. That's gone stiff though. Yes, most of the cameras have some "brassing" or some rust. But hey, they're neat to look at and are a short physical 'history' of the craft.