I have been interested in this ship since the good old days of NavyField 1 and now of course WoWS. I searched for a long time to find information back around 2013/2014 but wasn't able to find much...
Until I looked at the Polish card modeling company JSC. They had a 1:400 model of the Weser and in pretty good quality too. I purchased on and tucked it away in a drawer - I someday plan to attempt to either build and then 3D scan/3D print the components to mold for a resin model or some type of conversion to plastic.
Unfortunately JSC no longer has the Weser in their catalog, just a laser-cut detail upgrade kit - but they do have some other interesting items.
Here is a view of the model - remove the (dot) and replace with a .
https://picclick(dot)com/JSC-German-WW-II-Weser-Aircraft-Carrier-Paper-154483414285.html