There is some infomation on counterfeit Bosch injector nozzles in this thread. I don't know if it is enough to tell if yours are counterfeit or not.
Diesel Injector Cleaning DIY
The below pic is from post 95. The old thread is from 2014. In the picture you see the real Bosch injector nozzle pintel that has a flat area called a facet.
Apparently, the counterfeit nozzles back in 2014 did not have that facet.
Message to anyone. The 2 parts of the injector nozzles are mated together. Mixing them normally ruins the new nozzle.
You could be lucky and have real Bosch ones.