I believe that the action is a Schnitt of a Modell Nr. 14(overhanging scear) & say a Modell Nr. 175 of a lower intercepting scear. The English letter "SAFE" would point to a Sauer destined for an English speaking client/destination and if memory serves me, AW is seen on the water-table of Sauer examples as the AW mechanic must have been an actioner.

Sauer sought protection for their novel idea of a Clock-Hand indicator under DRGM Nr. 17193 while the Blade Indicator or "Cock-Lock" indicator found protection under DRGM Nr. 130243( DRGM/Gebrauchsmuster Nr. 130,243(signalwellen für kipplaufgewehre /Spannanzeiger).

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=294709&page=1

From the above, I would say it is a Sauer Schnitt displaying their Anson & Deeley Body Action & possibly used by Schoverling, Daly & Gales as a display if you acquired the piece in the U.S. of A. If it is a war trophy, them some other English speaking spot of land.

Cheers,

Raimey
rse