Need Help identifying Luger Clip

[Lugerdoc]

Concho, This mag is definately Weimar Police. The "a" suffix on the bottom and lack of a WaA, leads me to believe that it is probably for, what Still in Weimar Lugers calls, a 1920 or 1921 dated Police Alpha DWM (see page 28&29,p40&41,p161). From the Police markings on p196, the unit may have been Kriminalpolizei of Liegnitz (just guessing here).