>>3238834>I have a silver OM2n, it's not brass, I'm pretty sure it's just steel or alloy. Do you mean you have a regular chrome one, or a black paint one with silver-colored alloy underneath?
If the latter: damn. I'll have to cross my fingers the one I got is a brass copy then.
I've no clue why Olympus would make both alloy and brass copies of the black OM-1 and later _also_ the black OM-2...
I've a perfectly functional chrome OM2n lying around, so if the black one turns out to be broken, I'll just sneakily swap the top and bottom plates. (Probably heresy to an actual camera repairman)