The top left one is likely for a device, system or a part (Gerate Nummer) for the aircraft----Kopperschmidt Hamburg is the manufacturer of the system (Hersteller) and now sells and services HVAC but it is not uncommon for wartime builders and suppliers to diversify postwar, so they could well have made systems for the FW 190. The one on the top right has a "Nachbar Nummer" which literally means "replica" and Muster is the "pattern" of the particular part the plate belongs with or possibly the pattern of the plate itself, which is my guess as the plate looks like it could well be the main plate for the entire aircraft, listing the Baujahr ("build year) as '42 (presumably 1942, which makes sense). And the fact it's a replica plate possibly, that is still very interesting. Making replica plates for original items is something restoration specialists routinely do in my (limited) experience, particularly where an antique vehicle is going to be driven, flown, etc., and is attached in the correct place while the precious original is held in safekeeping. (The restorer for my particular 1942 Ford GPW "Jeep" did that for me so that I could keep the original plate in a display case to preserve all its dents, scratches, etc.,, while the new one, with all the complete info and slightly askew stamps in the same places as the original, is much easier to read and can easily be replaced if stolen or otherwise damaged). Werk Nummer is obvious as is Serie Nummer but Sach Nummer is quite interesting (lower left plate) because the manufacturer in this case is listed as Lutherwerke of Braunschweig---and Lutherwerke license built Me110's, 210's and 410's right up until the end of the war (as vikingBerserker correctly deduced in my opinion). The founder, Luther, had established the very first milling machine manufacturing company in Germany in the 1800's (you can find the rest of this interesting history on Wikipedia). So these plates may not only be faithful repros, there may be more to their history than meets the eye. In any case, fantastic to have them and researching the Werk Nummers and the Serie Nummers could be a fun endeavor. One more piece of speculation---for the Tante Ju, the Zeich Nummer may be a reference to the building plan or specification group for that particular aircraft, which would be really interesting to see, if that's true, to what purpose or design spec to which it may have been built. Thank you for sharing the photos of these...hang on to 'em!