1970 Dodge Charger 500 hub caps

[Rustymopar]

It came with 2 sets... Here are the pictures.

The set on the right came with a backing plate of sorts and has numbers stamped.
The cap on the left has no markings and no backing plate.

Which one is authentic and which one is 1975 reproduction from the dealer..?

My guess is the one on the right with markings is authentic to the car.

 

[Rustymopar]

Anybody want to take a stab? One is 1970 and the other is 75-77 reproduction.. But I don't know which is which.

 

[MoparMitch]

Opposite Rusty, I think the ones on the right are repro's. They realized later that the backing plates helped keep brake dust off.

 

[Rustymopar]

Really? All 9 are in great shape.. I will sell 4 of them and let 5 go with the car. That might make sense because I have 5 which would allow for the spare?