My local guy (not yet quite wired) has a fair number of bronze items. He recuse quite a bit of stuff from boats headed to the dumpster but tells me he has to take some to the recycler if it's been on his shelf too long.
Good Old Boat has a web page for consignment stores -- might be some in your area, or some with websites you could browse.

www.goodoldboat.com/resources_for_sailors/consignment_stores.php