Two 68 GTX's with two different bumpers, why?

[jayfire]

I have two 68's and one has all chrome bumpers, and other has chrome with black rubber inserts. Are both of these correct or is one from another vehicle? Thanks

 

[AR67GTX]

I'm not real familar with 68s but Plymouth in the 60s usually had a bumper guard option that included rubber inserts or chrome attachments with rubber fronts. My 64 Sport Fury had the optional front bumper with a rubber faced guard across the face. I think the rear guards were missing due to an accident. Probably someone who can decode trim tags or build sheets can determine if the car originally had such an option.

 

[Lionized]

I'm guessing mid year change. I've seen '69 Chargers with long and short bumperettes which was a mid year change.