Not a recent pickup, I bought this a couple of years ago from a council tip shop.
The putter had a rusted shaft, so I biffed the old shaft and it is now on the shaft of (of all things) a Ping Eye 2 3w.
Anyway, after a couple of years of thinking it was bronze, I recently decided it was brass - so I decided to give it a polish.
Looking at the pic on the bottom right, I can see it still needs a bit more work, but I am pleased with the results so far.