It would have been manufactured from 1884 forward:

http://www.google.com/patents?id=58lCAAA...264&f=false

http://www.doublegunshop.com/forums/ubbt...true#Post272601
The Permission Use Number if there will possibly provide insight.

I think I have seen the tube maker's stamp or something similar as the Scholberg klan comes to mind.

http://www.littlegun.be/arme%20belge/artisans%20identifies%20s/a%20scholberg%20gb.htm
I'll need to set aside a bit of time to perform some comparision.

Sure there were a few Suhl concerns that potentially could have had serialization at 11k but I would think it points to a Liege maker(or Birmingham??) as does the Crown over encircled speared crossed palms. But like Ken notes all the signature features of a Lindner sourced sporting weapon are there. Closely examine the tubes near the lower rib just forward of the flats for initials. Images of the flats & water table would be most insightful.

Kind Regards,

Raimey
rse