Ive looked up that C153 and in my opinion that watch was used. It looks practically as new, but I see small dents on the edge of the goldened keyboard panel. Also a small dent in the ss case upside left low corner.
Scratch on case back. Signs of opening the watch on the back side of the ss case in lower edge near the lug. Keyboard buttons look used, although in very good shape.
Crystal is plexi, so easy restorable, although it looks fine, cant say its polished.
Restored case, re-applied brush. Non-original bracelet.
And all of this for the stunning give-away price of just 1650 US dollars.
I also believe most of his pictures are sharpened and shopped, but that's just an idea that just popped in my head after scrutinizing some sets of pictures once more. But this is valid in my opinion (sharpening) although I wouldn't prefer doing it myself.
As you said well; don't sell non-nos as nos. Nevertheless stunning items.
And off course you two may contact me any time when you are short of those wicked spring washers
