Revealing mistake: When everyone's back at the flat, as Del Boy is looking straight down the hallway to his and Rodney's bedroom, someone comes up to him and he turns around. When it goes from his close-up to the wide shot of everyone else the shadow of the camera reversing backwards is visible for a few seconds.
Add timeDavid Hutchinson
Revealing mistake: When Del sees Denzil skating along and tells him that he's got his money (the butterfly), Denzil gives him a high five and crushes the butterfly. If you look at Del's hand when Denzil goes past him, you can see the butterfly is not crushed at all.