Need help - OEM rear Bumper with half circles cut in each end - what is it?

[RUNCHARGER]

Claudia has it right. My original Cuda bumper had them as well.

[Rich G.]

I was working on @Cudagirl3406 AAR CUDA today and had to peek at the rear bumper. Sure as hell there were  those little cutouts. I'll have to ck my 71 now and see if it's there too. Or is this a 70 only thing?

[Bossgold]

OK This is great....now I can just get the bumper re-chromed...moving forward. Now I did post another picture of a different bumper with a singular square factory cutout hole right below the license plate on this thread. I have seen two of these type as well. Did not know what the extra hole in the middle was for but on cars I see them filled with a bumper bolt.

[anlauto]

As I said before, likely had a trailer hitch at one time. More common than one might think.

[halftrackman]

Well this is  all new for me, never seen a trailer hitch on a 70 cuda, but I did put a trail hitch on my new 71 roadrunner, back in the old days, I was pulling a race car to the track   

[Bossgold]

yes OK I see it now thanks...must been some sort of option back in the day

[js27]

If I remember I will check my 70 Challenger to see if it has them.
JS27