When the dead sex worker, Josephine is being examined there is a crucifix on her left hand and a bracelet on her right-hand wrist. However, on subsequent cuts, these items are not on her.
In the first shot of the poultry seller's corpse, his mouth is closed. However in the next shot when the law enforcement officers are looking at him, his mouth is now open.
When Reinhardt and Dr. Liebermann search the brothel again, Liebermann finds a quadruple Sharps .22 derringer. Production of this weapon ceased in 1874 and these weapons were not sold in Europe. So it is impossible for Liebermann to find one in an Austrian brothel.
In the initial shot of the poultry seller, you can see the corpse breathing. His bloody stomach moves in and out.
The previous person stated, " Liebermann finds a quadruple Sharps .22 derringer. Production of this weapon ceased in 1874 and these weapons were not sold in Europe. So it is impossible for Liebermann to find one in an Austrian brothel." He speaks in absolute terms by saying it is "impossible".
Maybe UNLIKELY, but certainly not "Impossible". While the Derringer cited was made in Pennsylvania, transatlantic travel was becoming more and more popular after the end of the US Civil War. Many people brought fire arms on ships. It is very likely that at some point an American traveler or businessman carried a weapon such as this over to Europe and it could very well have ended up in an Austrian brothel.