Mourning: These orders from June 1st, 1740, say that royals, royal servants, nobility, and ministers had to wear specific black clothing for six weeks after FW's death, starting June 15th. (To give them time for ordering/tailoring I guess. Until then, everybody was supposed to wear any black clothing they already had.) Royal carriages had to be clad in black, but nobody else's. Envoys could do what they wanted on their own time but had to appear in black at court. I suspect it might have been similar after Fritz' death regarding the "deep mourning" period, i.e. the black clothes, which I think is different from a general mourning period. I also found this FW edict from 1734, which specifies the different mourning periods after the deaths of ordinary citizens, and it also says that when a royal dies, there will be individual orders every time, which we see above. So FWII must have given his own, but I couldn't find a copy so far.