Is this a birth certificate?

I'm trying to gather documents belonging to my grandmother, with the hope of eventually making a StAG 5 application. I have a feeling this is just a temporary document issued in the absence of a birth certificate. Would you say I need to get hold of a full birth certificate for the application, or might this be enough?

I'm trying to gather documents belonging to my grandmother, with the hope of eventually making a StAG 5 application. I have a feeling this is just a temporary document issued in the absence of a birth certificate. Would you say I need to get hold of a full birth certificate for the application, or might this be enough?