The load data is on the side and is probably a variant of "3,5 g GBP/STmG" or something of the like. The "108/49"(pre-1910 stamp) is the pre-rifling bore diameter of 0.350" which is very common for 9.3mm. Gustav Kersten was a prolific designer and if I recall correctly the brother-in-law of Franz Jaeger. Mr. Dietrich Apel is the grandson of Franz Jaeger and either would be interested in the pics or could provide additional info. There's another variant on the GGCA(German Gun Collector's Association) here: http://www.germanguns.com/questions.html .

I would look for a D.R.P. or D.R.G.M. stamp on the example. Gustav Kersten invented the Strassburger Verschluss which I think was under D.R.P. 141334. He's the father of the "Kersten Lockup", which was designed for SxSs but that is common on combo and O/U German guns. Somewhere I have additonal info on Kersten but zero on this example.

Kind Regards,

Raimey
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