I just had a look at the auction and here is - in short - what he says:
"Light meter is broken, shutter is gummed up (or resinified), camera has been checked by a "master craftsman" (Meisterbetrieb) in Hamburg, camera is from a household clearance of a relative"
About "Meisterbetrieb", it could be he is talking about "Meister-Kamera" a very high reputed official Leica dealer in Hamburg.
There is also an important information, that this sale is from private and therefore ALL kind of warranty / return excluded.
EDIT: I am not the seller, have no relation to the seller at all but German is my native language