The later stuff, like the punch , is made from Alumnium Bronze, an interesting substance in its own right. (And somewhat safer to handle ; )
I have found a few bronze tools, the fellow at the flea who runs a scrap yard saves them for me, people scrap $200 wrenches to get the $10 for the brass....*duh*
(Sadly, they sometimes put nasty file marks in them, apparently people don't believe they are solid brass/bronze...)