Like the look of this one's muted colours. Sharp as well. I was considering one of these cameras a while back. Any particular vices?
Thanks; I'd have liked a bit more depth of field, but I hadn't got a tripod with me so a narrower aperture wasn't possible without camera shake.
Vices are as with most folding cameras from 65+ years ago: The slow (1/30 and below) shutter speeds are prone to running slow or sticking with age, requiring a shutter mechanism CLA (usually about £50 or so to have done). Changing shutter speeds from above 1/30 to below 1/30 with the shutter cocked can damage the mechanism, so don't do It (and hope the previous user/s didn't!). The lens can suffer age related scratches, haze, element separation, fungus, etc. so check it's a good, clear one!
Lenses can be out of focus too, so ask for this to be checked and adjusted if having a CLA done - it's a fairly simple job that should be done at the same time as stripping the shutter mechanism, as they've got to take the lens off to get at the shutter mech, but specify that you want the focus checking in case they try to take a short cut! The film winding knob can become stiff with age - once again, an easy 'clean and lube' type fix for a camera repairer. On the rear film door, the red transparent plastic 'windows' can come loose and go missing from behind the metal sliding covers - once again, an easy fix for a camera repairer who's used to working on old cameras.
I've found the bellows on the 820 are usually OK, unless they've been physically damaged or abused. Check the chrome metal strut arms on the bellows folding mechanism, as the small rivet/pin that joins the folding lens/shutter mounting bracket/plate can break. If there's a leather case with it, then the strap tends to wear and break where it joins the main case stitching - nothing a good saddler shouldn't be able to repair, but once again, for a cost.
If looking for an 820 then go for one with the Ross Xpres lens as they made 'economy' versions with lesser quality (but apparently still quite good) lenses - for the sake of the usual £10 to £20 price difference you may as well go for the top spec. All that might sound a bit off-putting, but it's the same with most old folding cameras and it's all fairly easy to check and detect. Hope this is useful, and best of luck if you give one a go.