Walther sbs shotgun dated April 1940

[Pongobear]

I know it's a real mystery gun I'd love it to have belonged to " Herr Meier "

[froggy]

'DR' was a commonly used abbrevation for Deutsches Reichsbahn (German State Railways)
DRB is the official abreviation in 1940, DR is used on trains but only later-on.