What symbols are unique to the various denominations? In reading the meta discussion about what logo should be used for Christianity.SE, I got to wondering what symbols are unique to various denominations. Note: I'm not looking for symbols which are common across Christianity -- such as the Cross -- but which are more narrowly focused.  

For example, the following symbols are -- as far as I know -- uniquely Catholic:





An example of a symbol which I think is denominationally unique (and I think is Episcopal) is this:

Shield http://aldiechurch.com/images/episshield.png

What other denominationally unique symbols are there?
The Chi-Ro symbol dates back to 312 AD when Constantine had a vision, and was told to fight under that symbol at the Battle of Milvan Bridge. It is truly "catholic" in the sense that it is universal to all of Christianity. [You may have heard of a city in Egypt that the Copts named after this symbol ;) ]

IHS is also fairly common- I've seen that in Baptist churches and Anglican ones. I believe that is supposed to be the Greek form of Jesus but I don't know. (maybe someone should ask!)

The last one is just a coat of arms for The Episcopal Church, much like the emblem of the Holy See.