This is a slightly different post - a group of us are working on a tribute to a dear friend and his love of knockers. He was actually commenting on door knockers at the time so we decided to post a few knockers in his honor. This first one is a very conservative, kinda shy knocker, that is why the knocker is 'covered' up to some degree.
This is a very manly knocker mounted to a wonder oak door.

And the last of this set is of a very patriotic knocker!