Identification request - Given a WW1 German Shell

I was given this and wondering what it was fired from 51451739_1167166980127070_2626889044335788032_n !


Your trench art piece is most likely made from a German 77 x 230mmR cartridge case (what is the diameter of the case rim?).

Produced by Polte Werke, Magdeburg, in December of 1915.
“St” indicates a reinforced (stronger) cartridge case construction.
“172” = serial number
“Sp252” identifies the inspector for quality control.

This cartridge case was used in the German "7,7cm leichte Feld Kanone (l.F.K.) 96 n/A " or 7.7cm (77mm) light field cannon, 1896 new model.