is hidden in the modern proof.
if you look at the proof attached, you will see, different to all other "eagle over n" modern german proofs, this is an "eagle over i" stamping, called "instandsetzungsbeschuß - proofing after repair".
possibly this is an explanation for the changed breechblock, maybe when doing the proofing, the breechblock was broken, after changing the part, they did the repairproof ...
will see, i got contact to the proofinghous hannover, if they can give me acces to the files
regards from austria, wolfganggo .....
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