A Question for Neibelungen

[Luke H]

I have these two RE badges which are unquestionably from the same die. The only difference being the central cyphers EviiiR v’s GviR.

My question is how is this done? I assume the die has been ‘re-hobbed’ however there’s no traces whatsoever of attachment points for the preceding cypher on the GviR badge.

Be fascinated to know how this is accomplished. Both badges also exhibit similar slider types and both are of yellow brass. The GviR badge is somewhat a thicker strike from the reverse detail but no doubt the same maker.