I asked the dealership what is was for when I had my tranny serviced and they said it was factory installed for the integrated phone. Here are a couple pics I just took.

 

It's way cool man!!! Those are more durable then the ones I have.

 

Yeah I don't see how it could break unless you hit it with something....

 

UPDATE:
So as usual murphys law crushed my soul AGAIN..... I have been waiting for the AMG trunk badge that I had ordered and had received confirmation that it had FINALLY been delivered but when I went out to my mail box..... NOTHING I called the post office and they informed me that it is supposed to be in my parcel box which requires a key and the key should be in my regular mail box. I had already checked my mail box but decided I would check again, maybe somehow I missed it (not likely but worth a shot). I checked my mail box and realized there is a gap in the back just big enough for the key to fall behind , OF COURSE...... So I asked when they could come out and retrieve the key for me to which they replied it would have to be during their regular delivery shift and of course I am working swing shift currently so I will have to wait until tomorrow to get my badge. SIGH, I have already been waiting for 13 days for something that was supposed to take 4 days at the MAX, I guess what's another 24 hours right??? I am going to be PISSED if I don't have my badge tomorrow morning I will keep you guys updated on my trunk badge saga and post pics of the actual badge IF I get it.....

 

^^Shark fin appears to be aftermarket.

 

Sorry to say but crap does happen!
Hopefully you're waiting for something good?

 

Techs at the dealership told me it was for the integrated phone that is linked into my stock CD player, the connection leads to the hook up in my center console arm rest....

 

UPDATE:
The trunk badge FINALLY arrived and I have installed it. The badge actually looks pretty good, just like the OEM....

Here is what my old badge looked like


Here is what the new badge looks like


Here is the new badge installed


Finally we can end the trunk badge SAGA........

 

Hooray for the new ////AMG trunk badge!!!

 

Don't have and signs on the back of my C43 Very low profile and a good sleeper until another driver wants to play

 

did you get the AMG badge straight in line with the C43 logo ?
you have to place it right to match up!

 

I actually only replaced the ///// part so it made it REAL easy to line up. I placed pieces of tape around it before I removed it so I knew where the edges of the badge were. Once I removed it I used alcohol pads to remove the adhesive and the I reapplied the new /////. It is exactly where the original was AND I still have the brand new AMG lettering in case my original goes bad in the future

 

I thought about debadging mine but I just couldn't do it to one of 3,850 C43's in the world. Can't allow a piece of AMG history BLEND in with any old C class, it's just not right IMO. I do understand the sleeper aspect...

 

I agree with 503C43 ////AMG. Why take out the ////AMG when it actually belongs there? A lot of people are dying to put this badge on their cars knowing their cars isn't one. You should be proud to display it because the car is an original ////AMG. I was tempted to put that ////AMG badge in my 2000 C230 Kompressor but did not push through thinking: "Who am I kidding?" I think, I just have to buy a real ////AMG in the future.

On the other hand, DRBC43AMG's opinion of debadging his car is COOL too in the sense that his car is very modest and humble and if some crazy showoff on the road acts like the king of the road, then he can eat DRBC43AMG's dust when he floors his accelerator. Way to go man!