This was in all probability some experimental or special order, based on the old 11,15x60R M.71 case.   

The 11x45.5R was listed by Georg Roth as case number 92. The base is typical of the MB style base and the cartridge was produced from approximately 1880 until 1914. Military style headstamps appear on all cases. Various lengths and diameters have been recorded in...

The 11x45R MB was based on a shortened 11.15x60R military case. Probably introduced by Georg Roth in approximately 1876 and production continued until 1935. There are similar cartridges produced by Georg Roth with differing neck, shoulder and case lengths. Also...

The 11x42R has a MB base and was listed by Lorenz with DWM case number 180. It was referred to as a Landjäger (Rural Police) cartridge. It was first listed in the Lorenz c1886 Export catalogue and last listed in the DWM 1904 catalogue. Cartridge has a raised headstamp...

I am still looking for further information on this cartridge. Case has a heavy taper at the neck with a horse hair type wad.

The 11 x 40R Mäntsälän seppä is a wildcat and dates back to the 1930's. It was developed by a blacksmith (= "seppä" in Finnish) who lived in a village called Mäntsälä. At that time there was a civil guard called Suojeluskunta in Finland. The member of Suojeluskunta...

Based on a shortened 11.15 x 60R military cartridge. Production period from approximately 1876 until 1910 The no h/s variation was probably produced by Lorenz.

Still getting verification on this. Cartridge was produced by the B.STAHL PATRONENHÜLSEN und WAFFENFABRIK of Suhl (aka MESSINGHÜLSENFABRIK) which operated from 1871 to 1901 when it was taken over by GECADO (G.C. Dornheim). The company was formed in 1871 by Reinhard...

"This cartridge length came in two neck variations, the high neck and the low neck. It was introduced around 1874 and production continued until around 1910. It was first recorded in the 1877 Utendoerffer catalogue as the 11 x 28 R MBm Schilling. Cartridge...