I'm sure Ford or Axel will be along to set us on the straight & narrow. I believe Axel has discussed the acronym Rw. E and that it is a variant along with GwF.E, which may have been Reichswerke of Erfurt or Erfurt's Deutsche Werke from say 1919-1922?? I think Amberg ceased production in 1911 and Spandau had followed suite a year earlier in 1910 leaving the mechanics at Danzig & Erfurt, with the stamps more resembling the Erfurt inspectors. I would assume that if you Google RWE Mauser rifle you'll have more than enough to sift thru.

Kind Regards,

Raimey
rse