Continuity mistake: When Oliver bites Mugsy's hand whilst trying to retrieve the key, the key falls onto a plate and you can see there is a cup and saucer by the plate. In the next shot, the cup and saucer have disappeared.
Continuity mistake: When Stan pulls the tablecloth off the table whilst Oliver is trying to retrieve the key from Mugsy, at the far end of the table you can see a cup fall off the saucer. In the next shot, the cup is back on the saucer again.
