[COLOR="DarkRed"]2 ways to tell that:
1) magnet. if magnet doesn't stick, it's probably brass.
2) I believe that the brass shells had a different crimp to their snare beds. So, if you post a pic of the snare beds, someone can tell you.'
Also....pitting, I mean, it's something we all have to live with. Others can suggest good polishers/cleaners for that. I use 0000 grade steel wool....gently...but whenever I write that...I get swooped upon by folks telling me "don't use that"...so....I didn't say it....
I think that rechroming...while being VERY expensive (a good, proper job would cost in the range of $100-200 for that shell) would severely reduce the value of the drum should you ever got to resell.
It's one of those...thangs....the original finish is not in prime shape, but a refinish would diminish the vintageness of the drum.
Unless the pitting is real BAD...just live with it, and luv it ....[/COLOR]