Gebrüder Merkel Monogram
H. Scherping DR
Yes it is a Merkel stamp & you should also see it in the position of the left side of the aft barrel lug. At a minimum it notes the completion of the sporting weapon in the white & may note the finished product but for now I cannot say how it compares or differs from the monogram of a GM in a shield.
E. Schmidt & Habermann Drilling
Here some are going to argue that this is the stamp of the city of Suhl and true it is but it is either a task or completion mark for either E. Schmidt & Habermann or more so for one of the Brothers Merkel, where the preponderance of evidence is heavily tilted. All should note some state of completion as well as liability.
And to muddy the water a bit, Franz Merkel, son-in-law of Udo Anschütz.
Kind Regards,
Raimey
rse