Nice, lovely find. DRP Nr. 101949 was that of Johann Jacob Reeb in Bonn a. Rh. for a Patronenauswerfer fr Kipplaufgewehre with protection granted on March 20th, 1899. So that with the proofmarks would bound it to 1899-1912. J.J. Reeb was actually a maker & not a mere firearms merchant. This was Johann Jacob Reeb's brain-child of an ejector mechanism that he himself devised & filed for protection. Very unique find.

Cheers,

Raimey
rse