How to find current Geographic Coordinate System of multiple files?

Hi, i am working on about 1000 .dgn files in Microstation(v8.11.9.919) and i have the task to find out how many of them have a coordinate system assigned and how many that don't. (those that don't have to be georeferenced later)

I was thinking of running something like the "GEOCOORDINATE DETAILS" command in batch on all the .dgn in a folder and then automaticlly saving the output. But i am not experienced enough to know how to do that.

Any help or ideas is greatly appreciated :)