Brassing is what you get when the black paint on a camera wears through to the brass underneath, usually on the edges a hand finds first. New buyers tend to worry about it. Most collectors don’t, and a few go looking for it.
Where it shows
You’ll find it where the camera was held and carried: the strap lugs, the corners of the baseplate, the rewind knob and the advance lever, and the sharp edge of the top plate. A body that’s worn evenly at those points was carried a lot, shot a lot, and kept. That’s usually a good sign, since cameras that get used tend to get looked after.
Character, or damage
There is a line between patina and injury, and it’s worth learning. Smooth, gradual brassing is character. What we watch for instead are dents that break an edge, a baseplate that’s been pried off and put back, screw heads chewed up by the wrong driver, and seams that no longer sit flush. Those point to a drop or a forced repair, and they change what a piece is worth. Even wear tells you the camera was used. A hidden repair tells you something else, and it’s the thing we look hardest for.
How we grade it
Every camera we list has its brassing described, and where it matters we photograph it close. We’d rather you buy knowing exactly where it’s worn than find out when the box arrives. If the camera works, a bit of brass on the edges is nothing to worry about. Plenty of people prefer it that way.