The edge letters have a three piece collar:

On the Proof Dollars this edge lettering is added during the strike. This may/may not be same setup for the business strike dollars, but they are added as a separate process not part of the strike like the proof dollars. The can be flipped over on the edge letters on the business strike coins because of them being added later.

On the Proof Dollars this edge lettering is added during the strike. This may/may not be same setup for the business strike dollars, but they are added as a separate process not part of the strike like the proof dollars. The can be flipped over on the edge letters on the business strike coins because of them being added later.























