Plot hole?
In the scene where the 2 detectives visit Bruce Willis in his office to show him the ring after the liquor store scene, you can see Bruce wearing the black watch that he took (back) off the dead guy's arm. When he reaches over to grab the plastic bag the ring is in, the watch is clearly visible and I was expecting Dean Norris to comment on how he got the watch back, but nobody says anything.
Plot hole, careless / lazy writing or just me looking into it too much?