Just a simple question out of curiosity.

I have 3 different reproduction badges.
The bottom one in both photos are new, and the upper two used ones were acquired from a friend.
Looking at them, they are all different. They even are slightly different is size.

The fronts show slight differences in detail, especially with the thicker "427" in the lower one.
The rear of them reveals the biggest differences.

So which one is more correct to be like the original factory badges?

Dan.