During the bout of Kosho taking place in the gymnasium of Its Your Funeral, No.100 goes to locker No.6, and exchanges No.6's wrist watch for a similarly identical one, seen in the first picture.
You will observe in the picture a metal object to the left of No.6's wrist watch, and a crumpled handkerchief to the right.
In the following picture, as No.100 swaps No.6's wrist watch for an identical one, the metal object to the left of the wrist watch had gone! And at the back there is the addition of a dark blue Turtle-neck jersey, as worn by No.6, which you do not see in the first picture.
Here in the third and final picture, No.6 is about to retrieve his personal possessions from the top of his locker. As you can see the metal object is back, and turns out to be a Ronson cigarette lighter. However the dark blue Turtle-neck jersey is gone!
If you watch the sequence of this little scene you will observe that No.6 is fully dressed when retrieving his personal possessions from the locker. So when getting dressed No.6 took his dark blue Turtle-neck jersey out of the locker - without disturbing either his wrist watch, cigarette lighter, and crumpled handkerchief!
Its seems obvious that parts of this "locker room" scene were filmed at different times, so where were those responsible for "continuity" during the production of the Prisoner?
I'll be seeing you - or perhaps I won't - depending on the scene in question!